WO2023221525A1

WO2023221525A1 - Resource allocation method and apparatus of circuit board, circuit board, and storage medium

Info

Publication number: WO2023221525A1
Application number: PCT/CN2022/143285
Authority: WO
Inventors: 沈莉梅; 仇连根; 龚彬阳
Original assignee: 华为技术有限公司
Priority date: 2022-05-19
Filing date: 2022-12-29
Publication date: 2023-11-23
Also published as: CN117130763A

Abstract

The present application relates to the field of computer technology, and discloses a resource allocation method and apparatus of a circuit board, a circuit board, and a storage medium. According to the method, a BIOS of a circuit board automatically allocates resources to a hardware unit according to the quantity of resources pre-allocated by the circuit board for the hardware unit and the quantity of resources requested by the hardware unit. Thus, a BIOS can allocate resources to hardware units without updating the BIOS, thereby reducing the maintenance cost of the BIOS.

Description

Circuit board resource allocation method, device, circuit board and storage medium

This application claims the priority of the Chinese patent application with application number 202210555101. This reference is incorporated into this application.

Technical field

The present application relates to the field of computer technology, and in particular to a circuit board resource allocation method, device, circuit board and storage medium.

Background technique

Computer equipment includes circuit boards. Computer equipment can also be connected to external equipment. When the basic input output system (BIOS) of the circuit board recognizes the external equipment connected to the computer equipment, it uses the external equipment as the computer equipment. The hardware unit allocates the resources provided by the circuit board to the identified external devices.

Currently, the circuit board resource allocation process includes: the BIOS records the identification of each external device connected to the computer device through a whitelist. During the startup process, the BIOS records the identification of the external device currently connected to the computing device based on the identification recorded in the whitelist. Identify external devices and allocate resources to external devices that are successfully identified.

Regarding the above resource allocation process, once a computer device is connected to a new external device, the whitelist needs to be updated, and the BIOS also needs to be upgraded so that the upgraded BIOS can identify the newly connected device based on the updated whitelist. External device, the newly connected external device is used as the hardware unit of the computer device. Correspondingly, if the computer device frequently connects to new external devices, the BIOS needs to be continuously upgraded, which increases the maintenance cost of the BIOS.

Contents of the invention

Embodiments of the present application provide a circuit board resource allocation method, device, circuit board, and storage medium, which can reduce BIOS maintenance costs. The technical solution is as follows:

In a first aspect, a resource allocation method for a circuit board is provided. The circuit board is connected to a hardware unit. The hardware unit is used to provide hardware resources. The method is applied to the basic input and output system BIOS of the circuit board. The methods include:

Allocate resources to the hardware unit according to the first resource amount and the second resource amount, wherein the first resource amount is the resource amount pre-allocated by the circuit board for the hardware unit, and the second resource amount is The amount of resources requested by the hardware unit.

This method uses the BIOS of the circuit board to automatically allocate resources to the hardware unit based on the amount of resources pre-allocated by the circuit board for the hardware unit and the amount of resources requested by the hardware unit. Therefore, there is no need to upgrade the BIOS, and the BIOS can allocate resources to the hardware unit, thereby saving money. Reduce BIOS maintenance costs.

In a possible implementation, the circuit board is located in a computer device, the hardware unit is an external device of the computer device, the hardware unit is connected to the circuit board through a slot, and the first resource amount Equal to the maximum amount of resources corresponding to the slot.

In a possible implementation, the circuit board is connected to a connector, the slot is a card slot on the connector, the hardware unit is connected to the slot, and the With the second amount of resources, before allocating resources to the hardware unit, the method further includes:

Read the maximum resource amount corresponding to the slot from the connector, and use the read maximum resource amount as the first resource amount.

In a possible implementation, the circuit board further includes a resource manager, the resource manager is connected to the BIOS and the connector respectively, and the slot corresponding data is read from the connector. The maximum amount of resources includes:

Through the resource manager, the maximum amount of resources corresponding to the slot is read from the connector.

In a possible implementation, the slot is a card slot on the circuit board, the hardware unit is connected to the slot, the circuit board further includes a resource manager, and the resource managers respectively Connected to the BIOS and the slot, before allocating resources to the hardware unit according to the first resource amount and the second resource amount, the method further includes:

Through the resource manager, the maximum amount of resources corresponding to the slot is obtained, and the obtained maximum amount of resources is used as the first amount of resources.

In a possible implementation, the hardware unit includes a plurality of hardware sub-units, the second resource amount includes a plurality of third resource amounts, and each third resource amount corresponds to one of the plurality of hardware sub-units. A hardware subunit, each third resource amount is the maximum resource amount corresponding to the corresponding hardware subunit, and before allocating resources to the hardware unit according to the first resource amount and the second resource amount, the method further include:

The plurality of third resource amounts are read from the hardware unit.

In a possible implementation, the hardware unit includes a plurality of hardware sub-units, the second resource amount includes a plurality of third resource amounts, and each third resource amount corresponds to one of the plurality of hardware sub-units. A hardware subunit, each third resource amount is the maximum resource amount corresponding to the corresponding hardware subunit, and allocating resources to the hardware unit according to the first resource amount and the second resource amount includes:

If the first resource amount is greater than or equal to the sum of the plurality of third resource amounts, the resources corresponding to the third resource amount are allocated to each hardware subunit.

In a possible implementation, before allocating resources to the hardware unit according to the first resource amount and the second resource amount, the method further includes:

If the first resource amount is greater than the target resource amount stored at the first address in the hardware unit, create at least two logical resources for the hardware unit according to the multiple between the first resource amount and the target resource amount. Interfaces, the number of the at least two logical interfaces is equal to the multiple, and each logical interface is used to mount a hardware sub-unit of the hardware unit;

Perform a subunit mounting operation on the at least two logical interfaces respectively, and the subunit mounting operation is used to mount a hardware subunit for the logical interface;

If multiple logical interfaces among the at least two logical interfaces successfully mount the hardware subunit, the hardware unit includes multiple hardware subunits.

In a possible implementation, the circuit board further includes a processor, and performing a subunit mounting operation on the at least two logical interfaces includes:

Establish at least two first links, each first link corresponds to a logical interface, and each first link is used for communication between the processor and the corresponding logical interface;

Establish a mapping relationship between the at least two logical interfaces, the at least two first links, and at least two second addresses, where each second address is a hardware subunit mounted by the BIOS for the corresponding logical interface. assigned address.

In a possible implementation, the hardware unit is a high-speed serial computer expansion bus standard PCIE device, and the resource is bandwidth.

In a possible implementation, the circuit board includes multiple processors, the hardware unit is any processor among the multiple processors, and the first resource amount is equal to the total resources of the resources. The amount is divided by the total number of the multiple processors.

In a possible implementation, the circuit board is located in a computer device, the hardware unit is mounted with at least one external device of the computer device, and the circuit board is connected to the at least one external device through at least one slot. connect;

If the resource is a bus, the second resource amount is equal to the sum of the total resource amount requested by the at least one external device and a fourth resource amount. The fourth resource amount is the hot plug of the target slot of the BIOS. The total amount of resources pre-allocated for the hot-plug function, and the target slot is a slot with the hot-plug function among the at least one slot.

In a possible implementation, the total amount of resources requested by the at least one external device is equal to the sum of a first number and a second number, where the first number is the first external number of the at least one external device. The total number of devices, the second number is the total number of hardware subunits in the second external device in the at least one external device, the first external device is the at least one external device that does not include hardware An external device of a subunit, the second external device is an external device including a hardware subunit in the at least one external device, and before allocating resources to the hardware unit according to the first resource amount and the second resource amount, The method also includes:

Count the total number of the first external devices in the at least one external device to obtain the first number;

Count the total number of hardware subunits in the second external device in the at least one external device to obtain the second number;

The calculated sum of the first number and the second number is used as the total resource amount requested by the at least one external device;

Determine the fourth resource amount according to the number of the target slots in the at least one slot;

The sum of the total resource amount requested by the at least one external device and the fourth resource amount is used as the second resource amount.

In a possible implementation, the circuit board is located in a computer device, and the hardware unit is mounted with at least one external device of the computer device. If the resource is a memory mapped input/output address, the second The resource amount is equal to the sum of the resource amounts requested by the at least one external device.

For each external device in the at least one external device, if the external device does not include a hardware subunit, the maximum resource amount corresponding to the external device is used as the resource amount requested by the sub-device. If the external device includes For multiple hardware sub-units, the sum of the maximum resource amounts corresponding to the multiple hardware sub-units is used as the resource amount requested by the device;

The sum of resource amounts requested by the at least one external device is used as the second resource amount.

If the first resource amount is stored in the BIOS, obtain the stored first resource amount;

If the circuit board further includes a resource manager, obtain the first amount of resources through the resource manager, wherein the resource manager is connected to the BIOS, the hardware unit and the at least one external device respectively. connect.

In a possible implementation, allocating resources to the hardware unit according to the first resource amount and the second resource amount includes:

If the first amount of resources is less than the second amount of resources, and there is a target processor among the plurality of processors, allocate the excess resources of the target processor to the hardware unit, so that the hardware The unit is capable of being allocated said resources of said second amount of resources;

Wherein, the amount of resources pre-allocated by the circuit board for the target processor is greater than the amount of resources requested by the target processor.

In a possible implementation, the resource manager is a complex programmable logic device or a microcontroller.

In a second aspect, a resource allocation device is provided for executing the above resource allocation method. Specifically, the resource allocation device includes a functional module for executing the resource allocation method provided by the above-mentioned first aspect or any optional manner of the above-mentioned first aspect.

In a third aspect, a circuit board is provided, which includes a resource allocation unit configured to load and execute at least one program code from a memory, so that the resource allocation unit executes to implement operations performed by the above resource allocation method. .

In a fourth aspect, a computer-readable storage medium is provided. At least one program code is stored in the storage medium. The program code is read by the resource allocation unit in the circuit board, so that the resource allocation unit executes the above resource allocation method. The operation performed.

In a fifth aspect, a computer program product is provided. The computer program product includes program code. The program code is stored in a computer-readable storage medium. The resource allocation unit in the circuit board reads the program code from the computer-readable storage medium. , the resource allocation unit executes the program code, so that the resource allocation unit executes the method provided in the above-mentioned first aspect or various optional implementations of the first aspect.

Based on the implementation methods provided in the above aspects, this application can also be further combined to provide more implementation methods.

Description of the drawings

Figure 1 is a schematic structural diagram of a circuit board provided by an embodiment of the present application;

Figure 2 is a schematic structural diagram of another circuit board provided by an embodiment of the present application;

Figure 3 is a flow chart of a circuit board resource allocation method provided by this application;

Figure 4 is a flow chart of a resource allocation method when the hardware unit is an external device provided by an embodiment of the present application;

Figure 5 is a flow chart of a resource allocation method when the hardware unit is a processor provided by an embodiment of the present application;

Figure 6 is a flow chart of another resource allocation method when the hardware unit is an external device provided by an embodiment of the present application;

Figure 7 is a schematic structural diagram of a circuit board provided by an embodiment of the present application;

Figure 8 is a flow chart for allocating bandwidth to a riser card provided by an embodiment of the present application;

Figure 9 is a flow chart for allocating bandwidth to multi-chip PCIE devices provided by an embodiment of the present application;

Figure 10 is a flow chart of another resource allocation method when the hardware unit is a processor provided by an embodiment of the present application;

Figure 11 is a flow chart for allocating a bus to a CPU provided by an embodiment of the present application;

Figure 12 is a flow chart of a circuit board resource allocation method provided by an embodiment of the present application;

Figure 13 is a schematic structural diagram of a resource allocation device provided by an embodiment of the present application;

Figure 14 is a schematic structural diagram of a circuit board provided by an embodiment of the present application.

Detailed ways

In order to facilitate understanding, some terms involved in the embodiments of this application are first explained as follows:

Circuit board: Provides resources, and automatically allocates the resources provided by the identified hardware unit to communicate with the hardware unit through the allocated resources, where the circuit board is such as the motherboard. The provided resources include at least one of bandwidth, bus, and memory mapped input/output (MMIO) address.

Hardware unit: used to provide hardware resources. The hardware resources include at least one of computing resources, storage resources and other resources.

Resource amount: The amount of a resource, such as the size of bandwidth, the number of buses, or the size of MMIO addresses, etc.

The first amount of resources: the amount of resources pre-allocated by the circuit board for the hardware unit, where the pre-allocated resource amount is the number of resources allocated by the hardware unit when the circuit board pre-allocates resources for the hardware unit. The pre-allocation in this application is the preliminary planning of the use of resources, and what is allocated is the quantity of resources. In one possible implementation, pre-allocation is achieved by dividing the resources provided by the circuit board. Taking the resource as a bus as an example, the circuit board provides 100 buses, and the circuit board is connected to 10 hardware units. If the 100 buses are divided into 10 equal parts, then the amount of resources pre-allocated by the circuit board for each hardware unit is 10. In another possible implementation, pre-allocation is implemented by presetting the amount of resources for the hardware unit. For example, a resource amount is preset for each hardware unit connected to the circuit board to implement preallocation, where the resource amount preset for the hardware unit is also the preallocated resource amount. The preset amount of resources may be achieved by the user recording the amount of resources in the circuit board. For example, for at least one hardware unit that can provide hardware resources for the circuit board, the user pre-stores the at least one hardware unit and at least one third in the circuit board. There is a correspondence between resource amounts, each hardware unit corresponds to a first resource amount, and the corresponding relationship indicates that the resources of the first resource amount are pre-allocated to the corresponding hardware unit. Wherein, the at least one hardware unit includes a hardware unit to which the circuit board has been connected and/or a hardware unit to which the circuit board has not been connected. The hardware unit to which the circuit board has not been connected may be a hardware unit to which subsequent circuit boards may be connected. The preset resource amount may also be achieved by the user selecting an interface for the hardware unit to connect to the circuit board. For example, the user selects a certain interface and connects the hardware unit to the circuit board through the selected interface. The maximum amount of resources supported by the interface selected by the user That is, the amount of resources preset by the user for the hardware unit. For the circuit board, the maximum amount of resources supported by the interface selected by the user is the amount of resources pre-allocated by the circuit board for the hardware unit. Taking resource as bandwidth as an example, the user connects hardware unit 1 to interface 1 of the circuit board. The maximum bandwidth supported by interface 1 is 8K. Then 8K is the amount of resources preset by the user for hardware unit 1. The circuit board is the hardware unit. 1The amount of pre-allocated resources.

Second resource amount: the resource amount requested by the hardware unit. The amount of resources requested by the hardware unit is the maximum amount of resources that the hardware unit may request from the circuit board during the working process, which can be understood as the maximum amount of resources required by the hardware unit during the working process. Subsequently, the second resource amount will be further introduced with reference to specific embodiments.

The embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

FIG. 1 is a schematic structural diagram of a circuit board provided by an embodiment of the present application. Referring to FIG. 1 , the circuit board 100 is connected to at least one hardware unit 101 , and each hardware unit 101 is used to provide hardware resources. The hardware unit 101 includes at least one of a processor and an external device, where the processor is located on the circuit board, and the hardware resources provided by the processor include computing resources. The processor on the circuit board has at least one. Processor such as central processing unit (CPU).

The external device is a hardware unit 101 connected to the circuit board 100 through the interface 102 on the circuit board 100. The hardware resources provided by the external device include storage resources and other types of hardware resources other than storage resources. External devices include peripheral component interconnect (PCI) devices, peripheral component interconnect express (PCIE) devices, storage devices, etc. Among them, the hardware resources provided by the PCI device or the PCIE device include other types of hardware resources other than storage resources, and the hardware resources provided by the storage device include storage resources. Storage devices such as hard disks, read-only memory (ROM), random access memory (RAM), compact discs (compact disc read-only memory, CD-ROM), tapes, floppy disks, etc. The hard disk is, for example, a serial attached small computer system interface (SAS) hard disk or a serial advanced technology attachment hard disk (SATA) hard disk.

There is at least one interface 102 on the circuit board 100, and any interface 102 on the circuit board 100 is a wired interface or a wireless interface, and the wireless interface is, for example, a card slot. Each interface 102 on the circuit board 100 is connected to one or more hardware units 101 through direct connection or cascading. For example, Figure 2 is a schematic structural diagram of another circuit board provided by an embodiment of the present application. The interface 102 in the circuit board 100 shown in Figure 2 is connected to one or more external devices through a connector 103. On the connector 103 At least one card slot is provided, and each card slot is used to connect an external device. The card slot on the connector 103 is used to expand the interface of the circuit board 100. The connector 103 includes different types of connectors such as riser cards, hard disk backplanes, and expansion cards. Different types of connectors can connect to different types of external devices. For example, riser cards can connect to PCI devices or PCIE devices, hard drive backplanes can connect to hard drives, and expansion cards can connect to other types of external devices.

In one possible implementation, the processor on the circuit board 100 is connected to the interface 102 through a bridge, so that the processor can communicate with the external device connected to the interface 102 . For example, if the external device connected to a certain interface is a PCIE device or PCI device, the processor establishes a link with the interface through a PCIE bridge and accesses the PCIE device or PCI device connected to the interface through the link. For another example, the external device connected to a certain interface is a SAS hard disk. The processor establishes a link with the interface through a SAS bridge and accesses the SAS hard disk connected to the interface through the link.

In a possible implementation, as shown in Figure 1, some storage devices are connected to the processor and serve as the memory of the processor. Such storage devices may be located on the motherboard. This storage device is also a hardware unit 101 of the circuit board.

In a possible implementation manner, the circuit board 100 is located in a computer device, and the hardware unit connected to the circuit board 100 serves as a hardware unit of the computer device, providing hardware resources for the computer device. The computer device is a server or terminal, and the server is such as a local server or a cloud server. Terminals include user equipment, portable terminals, laptop terminals, desktop terminals, and the like.

The circuit board can run the BIOS. As shown in Figure 1, the circuit board 100 includes a target chip 104. The target chip 104 is the carrier of the BIOS and can run the BIOS. The functions of the BIOS are realized by running the BIOS. For each hardware unit 101 connected to the circuit board 100, the BIOS can allocate resources to the hardware unit 101 according to the first resource amount and the second resource amount corresponding to the hardware unit 101, thereby realizing automatic allocation of resources without upgrading the BIOS and reducing costs. BIOS maintenance costs.

In a possible implementation, the circuit board 100 also includes a resource manager 105, which is connected to the BIOS and the hardware unit 101 respectively. If a certain hardware unit 101 is located on the circuit board 100, the BIOS is directly or indirectly connected to the hardware unit 101. If the hardware unit 101 is an external device of the circuit board 100, the BIOS is indirectly connected to the hardware unit 101 through the circuit board interface 102. The resource manager 105 is a complex programmable logic device (CPLD) or a microcontroller unit (MCU). The embodiment of the present application does not limit the hardware form of the resource manager 105. The resource manager 105 is used to provide the BIOS with the first resource amount corresponding to each hardware unit 101 connected to the circuit board 100 . For example, after the circuit board 100 is powered on, the resource manager 105 obtains the first resource amount corresponding to each hardware unit 101 connected to the circuit board 100, and stores the obtained first resource amount corresponding to each hardware unit 101. After receiving the instruction from the BIOS to request the acquisition of the first resource amount, the resource manager 105 returns the stored first resource amount corresponding to at least one hardware unit 101 to the BIOS. Alternatively, after receiving an instruction from the BIOS to request the acquisition of the first resource amount, the resource manager 105 obtains the sum of the first resource amount corresponding to at least one hardware unit 101 according to the BIOS instruction, and returns the obtained at least one hardware unit 101 to the BIOS. The corresponding first resource amount.

It should be noted that the resource manager 105 is an optional component on the circuit board 100. For example, the circuit board 100 shown in Figure 1 or Figure 2 includes the resource manager 105. In another possible implementation, the BIOS is integrated There is a resource manager 105 function, but the circuit board 100 does not include the resource manager 105 .

From the above introduction to the circuit board, it can be seen that the circuit board can be connected to at least one hardware unit. If the circuit board is located in a computer device, each hardware unit connected to the circuit board is also the hardware unit of the computer device, and the BIOS of the circuit board is also the hardware unit of the computer device. is the BIOS of the computer device. Since the process of BIOS allocating resources to each hardware unit connected to this circuit board is similar, for the convenience of description, taking a hardware unit connected to this circuit board as an example, the process of BIOS allocating resources to this hardware unit is introduced as follows:

Figure 3 is a flow chart of a circuit board resource allocation method provided by the present application. The circuit board is connected to a hardware unit. The hardware unit is used to provide hardware resources. The method is applied to the BIOS of the circuit board. The method includes Follow steps 301-303.

301. The BIOS obtains the first resource amount corresponding to the hardware unit. The first resource amount is the resource amount pre-allocated by the circuit board for the hardware unit.

The circuit board includes a motherboard or other types of circuit boards. The resources provided by the circuit board include at least one of bandwidth, bus and MMIO address, and the resources provided by the circuit board are resources to be allocated by the BIOS. This hardware unit is any hardware unit connected to the circuit board. This hardware unit is an external device or processor. For example, the hardware unit is an external device such as a PCIE device or a PCI device, and for another example, the processor is a CPU.

In a possible implementation manner, when the hardware unit is an external device, if the circuit board is located in a computer device, the hardware unit is an external device of the computer device. In a possible implementation manner, if the hardware unit is an external device, the hardware unit is connected to the circuit board through a slot. For example, the hardware unit is connected to the slot, and the slot is connected to the circuit board, so that the hardware unit is connected to the circuit board. The slot is a card slot on the connector or a card slot on the circuit board. If the slot is a card slot on a connector, the hardware unit is connected to the slot, and the connector is connected to a certain interface of the circuit board, so that the card slot is indirectly connected to the circuit board through the connector. If the slot is a card slot on a circuit board, the slot is directly connected to the circuit board. If the slot supports wired connection, the hardware device is wired to the slot. If the slot supports card connection, the hardware device is located in the slot.

In a possible implementation, if the hardware unit is an external device and the resource to be allocated is bandwidth, the first resource amount is equal to the maximum resource amount corresponding to the slot. Taking the resource as bandwidth as an example, the maximum resource amount corresponding to the slot is the maximum bandwidth supported by the slot.

In a possible implementation, the circuit board includes a plurality of processors, and the hardware unit is a first processor among the plurality of processors, wherein the first processor is any one of the plurality of processors. processor. At this time, the resource is a bus or an MMIO address, and the first resource amount corresponding to the hardware unit is equal to the total resource amount of the resource divided by the total number of the multiple processors. Taking resources as buses as an example, the circuit board provides 100 buses. The circuit board includes 5 processors, and the first resource amount corresponding to each processor is 20. Taking the resource as an MMIO address as an example, the size of the MMIO address space provided by the circuit board is 200. The circuit board includes 5 processors, and the first resource amount corresponding to each processor is 40.

302. The BIOS obtains the second resource amount corresponding to the hardware unit, and the second resource amount is the resource amount requested by the hardware unit.

In a possible implementation, when the hardware unit is an external device, if the hardware unit does not include a hardware sub-unit, the second resource amount is equal to the maximum resource amount corresponding to the hardware unit, and the maximum resource amount corresponding to the hardware unit It is the maximum amount of resources that the hardware unit may request during the work process, or it can also be understood as the maximum resource amount that the hardware unit requires during the work process, and the maximum resource amount that the hardware unit supports. Taking the resource as bandwidth as an example, the maximum bandwidth supported by the hardware unit is X8, then the maximum bandwidth required by the hardware unit during work is X8, and the second resource amount is X8.

When the hardware unit is an external device, if the hardware unit includes multiple hardware sub-units. Taking the hardware device as a PCIE device as an example, if the PCIE device includes multiple chips, each chip in the PCIE device is a hardware subunit.

If the hardware unit includes multiple hardware sub-units, the second resource amount includes a plurality of third resource amounts, and each third resource amount corresponds to a hardware sub-unit among the multiple hardware sub-units, and each third resource amount The amount is the maximum amount of resources corresponding to the corresponding hardware subunit. Among them, the maximum amount of resources corresponding to a hardware subunit is the maximum amount of resources requested by the hardware subunit. For example, the maximum amount of resources requested by the hardware subunit is the maximum amount of resources that the hardware subunit may request during the work process. Alternatively, it can also be understood as the maximum amount of resources required by the hardware subunit during its work. Taking the resource as bandwidth as an example, the maximum bandwidth supported by the hardware subunit is X2, then the maximum bandwidth required by the hardware unit during work is X2, and the third resource amount corresponding to the hardware subunit is X2. It should be noted that the maximum amount of resources corresponding to each hardware sub-unit of the hardware unit may be the same or different. Correspondingly, the values of the plurality of third resource amounts included in the second resource amount may be the same or different. May be different.

In another possible implementation, when the circuit board is located in a computer device and the hardware unit is a processor, the hardware unit is mounted with at least one external device of the computer device, and the at least one external device may be the same type of external device, or possibly different types of external devices. For example, the at least one external device includes at least one external device among a PCI device, a PCIE device, or a hard disk. The circuit board is connected to the at least one external device through at least one slot. For example, the circuit board is connected to one of the at least one external device through each slot in the at least one slot.

When the slot has a hot-swappable function, if the slot is hot-swapped, the slot will occupy the bus. Therefore, when the hardware unit is a processor, if the resource is a bus, the second resource amount is equal to the The sum of the total resource amount requested by at least one external device and the fourth resource amount, where the fourth resource amount is the total resource amount pre-allocated by the BIOS for the hot plug function of the target slot, and the target slot is the at least one A slot with hot-swappable functionality.

The at least one external device may include an external device that does not include a hardware subunit, or there may be an external device that includes a hardware subunit. For convenience of description, the at least one external device that does not include a hardware subunit will be referred to as the third external device. An external device, the external device including a hardware subunit among the at least one external device is called a second external device. Since each hardware subunit in each first external device or each second external device requires at least one bus when working, the total amount of resources requested by the at least one external device is equal to the first number and the second number. The sum of the numbers, where the first number is the total number of first external devices in the at least one external device, and the second number is the total number of hardware subunits in the second external device in the at least one external device. number.

When the hardware unit is a processor and the resource is an MMIO address, the second resource amount is equal to the sum of resource amounts requested by the at least one external device. At this time, the amount of resources requested by each external device is the maximum workload requested by each external device during its work. For the first external device among the at least one external device, the resource amount requested by the first external device is the maximum resource amount corresponding to the first external device. For the second external device among the at least one external device, at this time, the resource amount requested by the second external device is the sum of the maximum resource amount corresponding to each hardware unit in the second external device.

303. The BIOS allocates resources to the hardware unit according to the first resource amount and the second resource amount.

In the embodiment of the present application, the BIOS of the circuit board automatically allocates resources to the hardware unit based on the amount of resources pre-allocated by the circuit board for the hardware unit and the amount of resources requested by the hardware unit. Therefore, there is no need to upgrade the BIOS, and the BIOS can allocate resources to the hardware unit. resources, thereby saving BIOS maintenance costs.

The method by which the BIOS obtains the first resource amount corresponding to the hardware unit includes any of the following methods A and B.

Method A: The BIOS obtains the first resource amount corresponding to the hardware unit from the circuit board or hardware unit.

Method B: The BIOS obtains the first resource amount corresponding to the hardware unit through the resource manager on the circuit board.

For mode A, for different types of hardware units, the process by which the BIOS obtains the first resource amount corresponding to the hardware unit is different. In the following, combined with the embodiment shown in Figure 4, when the hardware unit is an external device, the BIOS obtains The first resource amount process corresponding to the hardware unit is introduced in detail. The process by which the BIOS obtains the first resource amount corresponding to the hardware unit when the hardware unit is a processor will be described in detail with reference to the embodiment shown in FIG. 5 . Method B will be introduced in detail with reference to the embodiment shown in FIG. 10 .

Figure 4 is a flow chart of a resource allocation method when the hardware unit is an external device provided by an embodiment of the present application. The circuit board is connected to the hardware unit. The hardware unit is used to provide hardware resources. The method is applied to the circuit board. BIOS, the method includes the following steps 401-404.

401. The BIOS identifies the hardware unit connected to the circuit board.

Wherein, the hardware unit is any hardware unit connected to the circuit board. During startup, the BIOS obtains the configuration information of each hardware unit connected to the circuit board and identifies each hardware unit through the configuration information of each hardware unit to determine the type of each hardware unit. For the convenience of description, here we take a hardware unit as an example, and the configuration information of the hardware unit is introduced as follows:

Wherein, if the hardware unit is an external device and the hardware unit does not include a hardware sub-unit, the configuration information of the hardware unit includes the maximum amount of resources corresponding to the hardware unit, the identification of the interface to which the hardware unit is connected on the circuit board, and the At least one of the identifiers of the hardware unit, wherein the maximum resource amount corresponding to the hardware unit is the maximum resource amount of the resources supported by the hardware unit, or it can also be understood as the resource amount required by the hardware unit during the work process. Maximum amount of resources.

If the hardware unit is an external device, and the hardware unit includes multiple hardware sub-units, the configuration information of the hardware unit also includes configuration information of multiple hardware sub-units, and the configuration information of each hardware sub-unit includes the corresponding hardware sub-unit. At least one of the maximum amount of resources and the identification of the corresponding hardware subunit.

If the hardware unit is a processor, the configuration information of the hardware unit includes at least one of an identifier of the hardware unit, an identifier of at least one interface, and at least one link information, wherein the at least one interface is an interface on a circuit board. , the at least one interface is used to connect an external device mounted on the processor. Each link information corresponds to one interface among the at least one interface, and each link information is used to indicate a link between the hardware unit and the corresponding interface. If a link is implemented through bridging and the link includes at least one bridge, the corresponding link information of the link includes the identification of the at least one bridge. If the interface connected to the link is used to connect PCIE devices, the at least one bridge is a PCIE bridge. If the interface connected to the link is used to connect SAS hard disks, the at least one bridge is a SAS bridge.

The process of identifying the hardware unit is introduced as follows:

The BIOS stores the configuration information of the circuit board. The configuration information of the circuit board includes the maximum number of processors supported by the circuit board, the configuration information of multiple processors on the circuit board, the configuration information of each interface and the circuit board. The identification of the board, wherein the multiple processors are processors connected to the circuit board, and the total number of the multiple processors is less than or equal to the maximum number of processors supported by the circuit board. The configuration information of each interface includes the maximum amount of resources corresponding to the corresponding interface and the identifier of the corresponding interface. The maximum amount of resources corresponding to each interface is the maximum amount of resources supported by the corresponding interface. For example, the maximum bandwidth supported by an interface is X8. The maximum amount of resources corresponding to the interface is X8.

The BIOS obtains the identifier of the hardware unit from the hardware unit, and determines whether the hardware unit is a processor based on the identifier of the hardware unit and the configuration information of the circuit board. For example, for the configuration information of any processor in the configuration information of the circuit board, if the identifier of the hardware unit is the same as the identifier of the processor in the configuration information of any processor, then the hardware unit is a processor.

When the BIOS starts, the hardware unit connected to each interface on the circuit board is identified. For the convenience of description, taking an interface on the circuit board as an example, the process of identifying the hardware unit connected to the interface includes the following: Steps 4011-4013.

Step 4011: If the interface is not connected to a connector, the BIOS enables the link between the processor and the interface.

Among them, if the interface is not connected to a hardware unit (such as an external device) through a connector and is directly connected to the hardware unit, then the interface is not connected to a connector, and the link between the processor and the interface is the processing link between the server and this hardware unit. If the interface is connected to a hardware unit (such as an external device) through a connector, the interface interfaces with the connector.

The BIOS queries the processor corresponding to the interface in the configuration information of the circuit board. The BIOS sends the configuration information of the processor in the configuration information of the circuit board to the processor because the link between the processor and the interface has been established in advance. is completed, the processor enables the link between the processor and the interface according to the link information corresponding to the interface in the configuration information of the processor.

In a possible implementation, the processor includes a control register, the BIOS sends the configuration information of the processor to the control register, and the control register stores the configuration information of the processor. The processor enables the link between the processor and the interface according to the link information corresponding to the interface in the configuration information of the processor stored in the control register.

Step 4012: If the interface is connected to the connector, the BIOS establishes a link between the processor and each card slot of the connector.

Wherein, for each card slot of the connector, the link between the processor and each card slot includes a link between the processor and the interface and a link between the interface and each card slot. Each card slot of the connector can connect to a hardware unit (such as an external device), and the link between the processor and each card slot is also the link between the processor and the hardware unit connected to each card slot. link.

The BIOS reads the connector's configuration information from the connector. For example, the configuration information of a connector is stored in the connector's CPLD, and the BIOS reads the configuration information of the connector from the connector's CPLD. The configuration information of the connector includes the device type of the connector, the number of card slots of the connector, and the configuration information of each card slot on the connector. Among them, the device type of the connector is such as a riser card, or a hard disk backplane, etc. The configuration information of each card slot includes the identification of each card slot and the maximum amount of resources corresponding to each card slot. The maximum resource amount of each card slot is the maximum resource amount supported by each card slot, that is, the maximum resource amount required by each card slot during its operation. In a possible implementation, for any card slot on the connector, if any card slot has a hot-swappable function, the configuration information of any card slot also includes a target identification, and the target identification indicates that the Any card slot is hot-swappable.

The BIOS sends the read configuration information of the connector to the processor. If the BIOS does not send the configuration information of the processor to the processor, the BIOS sends the configuration information of the processor and the configuration information of the connector to the processor (such as a control register in the processor). The processor establishes a link between the processor and each card slot of the connector according to the configuration information of the connector. For example, the processor enables a link between the processor and the interface, and the processor establishes a link between the interface and each card slot of the connector according to the configuration information of the connector. The processing The link between the server and each card slot is established.

Step 4013: For any link corresponding to the interface, the BIOS performs a scanning operation on the any link. The scanning operation is used to scan whether the link is connected to an external device.

Wherein, if the interface is not connected to a connector, any link is a link between the processor and the interface. If the interface is connected to a connector, the any link is a link between the processor and any card slot of the connector.

The BIOS scans any link. If the scan is successful, it means that a hardware unit is connected to any link, and the connected hardware unit is recognized as an external device. If the scan fails, it means that there is no hardware unit connected to any link.

In a possible implementation, the BIOS can also allocate temporary resources to the successfully scanned hardware unit, so that the BIOS can access the hardware unit according to the temporary resources allocated to the hardware unit. For example, the circuit board provides multiple buses and multiple MMIO addresses. Each MMIO address is used to indicate an address space. If the hardware unit scans successfully, the BIOS allocates a bus for the hardware unit from multiple buses. Allocate an MMIO address to the hardware unit among multiple MMIO addresses. The bus and MMIO address allocated to the hardware unit are temporary resources allocated to the hardware unit, so that the BIOS can access the hardware according to the bus allocated to the hardware unit. unit, or access the hardware unit according to the MMIO address assigned to the hardware unit in a manner similar to accessing memory.

In a possible implementation manner, the BIOS establishes a corresponding relationship between any one of the multiple buses and the hardware unit to allocate the any bus to the hardware unit. The BIOS establishes a corresponding relationship between any one of the multiple MMIO addresses and the hardware unit, and maps the hardware unit to the address space indicated by the any MMIO address, so as to realize the allocation of any MMIO address to the hardware unit. hardware unit.

402. If the identified hardware unit is an external device and the hardware unit is connected to the circuit board through a slot, the BIOS will obtain the maximum resource amount corresponding to the slot connected to the hardware unit and the circuit board. A first amount of resources, wherein the first amount of resources is an amount of resources pre-allocated by the circuit board to the hardware unit.

The slot may be a card slot on a connector or a card slot on a circuit board. If the slot is a card slot on a connector, the BIOS reads the maximum amount of resources corresponding to the card slot from the connector.

For example, the BIOS accesses the connector, reads the maximum resource amount corresponding to the slot from the configuration information of the connector, and uses the read maximum resource amount corresponding to the slot as the first resource amount. For another example, the BIOS has stored the configuration information of the connector in the control register of the processor, and then the BIOS obtains the maximum amount of resources corresponding to the slot from the configuration information of the connector stored in the control register, and will obtain the maximum amount of resources. The maximum resource amount corresponding to the slot is determined as the first resource amount.

If the slot is a card slot on a circuit board, the BIOS will regard the slot as an interface on the circuit board, query the configuration information of the interface from the configuration information of the circuit board, and obtain the interface from the configuration information of the interface. The corresponding maximum resource amount is determined as the first resource amount.

403. The BIOS reads the second resource amount corresponding to the hardware unit from the hardware unit, and the second resource amount is the resource amount requested by the hardware unit.

In a possible implementation, after allocating a bus to the hardware unit, the BIOS accesses the configuration information stored at the first address in the configuration space of the hardware unit based on the bus allocated to the hardware unit. Read the second amount of resources from the configuration information stored at the first address.

If the hardware unit does not include a hardware subunit, the configuration information stored at the first address is the configuration information of the hardware unit. If the hardware unit includes multiple hardware subunits, the configuration information stored at the first address is the multiple hardware subunits. Configuration information of the first hardware subunit within each hardware subunit. In a possible implementation, if the hardware unit includes multiple hardware sub-units, the BIOS does not have the right to access the configuration information of the hardware sub-units other than the first hardware sub-unit in the multiple hardware units. In this case, , the configuration information stored at the first address may be the configuration information of the hardware unit, or it may be the configuration information of the first hardware subunit in the hardware unit.

If the hardware unit includes multiple hardware sub-units, and the second resource amount includes a third resource amount, in order to be able to read multiple third resource amounts when the hardware unit includes multiple hardware sub-units, the BIOS reads the third resource amount according to the first The maximum amount of resources in the configuration information stored at the address and the first amount of resources are determined to determine whether the hardware unit includes a hardware sub-unit, such as the following steps 4031-4033.

Step 4031: The BIOS reads the target resource amount from the first address of the hardware unit, and the target resource amount is the maximum resource amount corresponding to the resource in the configuration information stored at the first address.

Wherein, if the hardware unit does not include hardware sub-units, the target resource amount is the maximum resource amount corresponding to the hardware unit. If the hardware unit includes multiple hardware sub-units, the target resource amount is the maximum resource amount corresponding to the first hardware sub-unit among the multiple hardware sub-units. At this time, the BIOS does not know whether the hardware unit includes a hardware subunit, and it still needs to be determined by performing the following steps 4032 and 4033.

Step 4032: If the first resource amount is greater than the target resource amount, the BIOS creates at least two logical interfaces for the hardware unit according to the multiple between the first resource amount and the target resource amount. The number is equal to this multiple, and each logical interface is used to mount one hardware subunit of this hardware unit.

If the first amount of resources is greater than the target amount of resources, the hardware unit may or may not include hardware sub-units. If the hardware unit is an external device, the first amount of resources is the maximum amount of resources that the BIOS can allocate to the hardware unit. In order to determine whether the hardware unit includes a hardware subunit, the BIOS assumes that the hardware unit includes multiple hardware subunits, and each The maximum amount of resources corresponding to each hardware subunit is the target resource amount, then the BIOS creates at least two logical interfaces for the hardware unit based on the multiple between the first resource amount and the target resource amount. Subsequently, the BIOS can create at least two logical interfaces based on the at least two When a hardware subunit is mounted on a logical interface, determine whether the hardware unit includes a hardware subunit.

In a possible implementation, at least two logical interfaces are generated according to a multiple between the first resource amount and the target resource amount, and a corresponding relationship between the at least two logical interfaces and the hardware unit is established, so as to The implementation creates at least two logical interfaces for this hardware unit.

Step 4033: The BIOS performs a subunit mounting operation on the at least two logical interfaces respectively. The subunit mounting operation is used to mount hardware subunits for the logical interfaces.

In a possible implementation, the BIOS establishes a link between the logical interface and the processor and configures the link so that the link can access the device mounted on the link to implement subunit mounting. operate. For example, steps 40331-40332 below.

Step 40331: The BIOS establishes at least two first links based on the at least two logical interfaces. Each first link corresponds to a logical interface, and each first link is used for communication between the processor and the corresponding logical interface. .

Wherein, each first link is a link between the processor and the corresponding logical interface.

In a possible implementation manner, a corresponding relationship between each logical interface and the second link is established, and the first link where each logical interface is located is indicated through the corresponding relationship. The second link is a link between the processor and the hardware unit.

Step 40332: The BIOS establishes a mapping relationship between the at least two logical interfaces, the at least two second links, and at least two second addresses. Each second address is a hardware subunit mounted by the BIOS for the corresponding logical interface. assigned address.

The second address is an MMIO address pre-allocated to the hardware subunit mounted on the corresponding logical interface.

For each of the at least two logical interfaces, the BIOS allocates an MMIO address to each logical interface, and the MMIO address allocated to each logical interface is used as a second address. After the BIOS is established and allocates MMIO addresses to each logical interface, the hardware subunits existing in the hardware unit can be mapped to the address space indicated by the MMIO address of each logical interface.

In addition, the BIOS can also allocate a bus to each logical interface so that the hardware subunit corresponding to the logical interface can be subsequently accessed through the bus. Among them, the bus and MMIO addresses allocated for each logical interface are temporary resources allocated for each logical interface. It should be noted that the way the BIOS allocates temporary resources to each logical interface is the same as the way it allocates temporary resources to the hardware unit in step 4012. Here, the embodiment of the present application describes the way the BIOS allocates temporary resources to each logical interface. No longer.

After the BIOS performs subunit mounting operations on the at least two logical interfaces, the BIOS queries whether each of the at least two logical interfaces successfully mounts the hardware subunit. If multiple of the at least two logical interfaces If all logical interfaces successfully mount the hardware subunit, then the hardware unit includes multiple hardware subunits. If only one logical interface among the at least two logical interfaces successfully mounts the hardware subunit, and the other logical interfaces fail to mount, It means that the hardware subunit mounted on this logical interface is the hardware unit itself, then the hardware unit does not include hardware subunits.

For the convenience of description, taking one logical interface among the at least two logical interfaces as an example, the BIOS queries whether the logical interface successfully mounts the hardware subunit is introduced as follows:

The BIOS determines the first link corresponding to each logical interface and the bus allocated to each logical interface based on the mapping relationship between the at least two logical interfaces, the at least two first links, and the at least two buses. For any one of the at least two logical interfaces, the BIOS accesses the first link corresponding to the logical interface through the MMIO address assigned to the logical interface, and accesses the configuration space of the hardware unit through the first link, If the identifier of the hardware subunit can be queried in the configuration space, the logical interface successfully mounts the hardware subunit. If the identifier of the hardware subunit is not found in the configuration space, it means that the logical interface fails to be mounted.

After determining whether the hardware unit includes a hardware subunit, if the hardware unit does not include a hardware subunit, the target resource amount read from the first address is the maximum resource amount corresponding to the hardware unit, and the target resource amount is As the second resource amount of the hardware unit.

If the hardware unit includes multiple hardware sub-units, the target resource amount is the maximum resource amount corresponding to the first hardware sub-unit among the multiple hardware sub-units, and the BIOS uses the target resource amount as the first hardware sub-unit. The third resource amount corresponding to the unit. For any hardware subunit among the plurality of hardware subunits except the first hardware subunit, the BIOS determines the mapping relationship between the at least two logical interfaces, the at least two first links, and the at least two buses. , determine the first link corresponding to the logical interface mounted on any hardware subunit and the second address of the bus assigned to the logical interface, and access the corresponding first link through the bus assigned to the logical interface. The first link accesses the configuration space in the hardware unit, reads the maximum resource amount corresponding to any hardware sub-unit from the configuration space, and uses the read maximum resource amount corresponding to any hardware sub-unit as This any hardware subunit corresponds to the third amount of resources.

After obtaining the third resource amount corresponding to each hardware subunit in the hardware unit, the acquisition of the second resource amount corresponding to the hardware unit is completed.

The above steps 4031-4033 are explained by taking as an example that if the hardware unit includes multiple hardware sub-units, the BIOS has the right to access the configuration information of the first hardware sub-unit among the multiple hardware units. In another possible implementation, , if the hardware unit includes multiple hardware sub-units, the BIOS has the right to access the configuration information of each hardware sub-unit in the multiple hardware units. In this case, the configuration information stored at the first address in the hardware unit may include multiple hardware units. Configuration information of each hardware subunit in the unit. For this situation, the BIOS can access the first address in the hardware unit, read the maximum amount of resources corresponding to each hardware subunit of the hardware unit from the first address, and divide the maximum amount of resources corresponding to each hardware subunit into As a third resource.

404. The BIOS allocates the resource to the hardware unit according to the first resource amount and the second resource amount.

Wherein, the resource is bandwidth. If the first resource amount is greater than or equal to the second resource amount, and the hardware unit does not include a sub-hardware unit, the BIOS allocates the first resource amount to the hardware unit, or allocates the first resource amount to the hardware unit. Allocate the second amount of resources so that the resources allocated to the hardware unit can meet the work requirements of the hardware unit.

If the second resource amount includes multiple third resource amounts, and the first resource amount is greater than or equal to the sum of the multiple third resource amounts, the BIOS allocates corresponding third resources to each hardware subunit of the hardware unit. The amount of resources enables each hardware subunit in the hardware unit to be allocated sufficient resources to meet the work requirements of each hardware unit.

In the method provided by the embodiment of the present application, the BIOS of the circuit board automatically allocates resources to the hardware unit based on the amount of resources pre-allocated by the circuit board for the hardware unit and the amount of resources requested by the hardware unit. Therefore, there is no need to upgrade the BIOS, and the BIOS can Allocate resources, thereby saving BIOS maintenance costs.

Figure 5 is a flow chart of a resource allocation method when the hardware unit is a processor provided by an embodiment of the present application. The circuit board is connected to the hardware unit. The hardware unit is used to provide hardware resources. The method is applied to the circuit board. BIOS, the method includes the following steps 501-505.

501. The BIOS identifies the hardware unit connected to the circuit board.

This step 501 is the same as the above-mentioned step 401. Here, this step 501 will not be described again in this embodiment of the present application.

502. If the identified hardware unit is a processor, and the processor is mounted with at least one external device, the BIOS uses the average resource amount of the resource as the first resource amount corresponding to the hardware unit.

The average resource amount is the total resource amount divided by the total number of processors on the circuit board.

In a possible implementation, the average resource amount is stored in the configuration information of the circuit board, the BIOS obtains the average resource amount from the configuration information, and uses the average resource amount as the first resource corresponding to the hardware unit quantity.

In another possible implementation, the configuration information of the circuit board stores the total number of multiple processors on the circuit board and the total amount of resources, and the BIOS divides the total amount of resources by the total amount of resources. number, the average resource amount is obtained, and the average resource amount is used as the first resource amount of the hardware unit.

503. If the resource is a bus, the BIOS uses the sum of the total resource amount requested by at least one external device mounted on the hardware unit and the fourth resource amount as the second resource amount of the hardware unit.

The fourth amount of resources is the total amount of resources pre-allocated by the BIOS for the hot-plug function of the target slot, and the target slot is the slot with the hot-plug function among the at least one slot. The total amount of resources requested by the at least one external device is equal to the sum of a first number and a second number. The first number is the total number of first external devices in the at least one external device. The second number is The total number of hardware subunits in the second external device of the at least one external device, the first external device is an external device that does not include hardware subunits of the at least one external device, and the second external device is the at least one external device. A device includes an external device that is a hardware subunit.

Since each first external device occupies a bus during operation, and each hardware subunit in the second external device also occupies a bus during operation, when the resource is a bus, the subsequent at least one The total amount of resources requested by the external device during operation may reach the total number of first external devices (i.e., the first number) in the at least one external device and the total number of hardware subunits (i.e., the second external device) in the second external device. The sum of two numbers), therefore, when the resource is a bus, the total amount of resources requested by at least one external device is equal to the sum of the first number and the second number.

In addition, for a target slot with hot-swap function, subsequent users may hot-swap the target slot, and the target slot will request a certain amount of buses during hot-swapping, so the BIOS will first request at least one bus. The hot plug function of the target slot in the slot reserves a fourth amount of bus resources. It can be understood that the fourth resource amount is the total resource amount requested by the target slot in the at least one slot, where there are one or more target slots in the at least one slot.

Since the at least one external device is mounted under the hardware unit through the at least one slot, the sum of the bus requested by the at least one external device and the bus requested by the target slot is the amount of resources requested by the hardware unit, then The second resource amount corresponding to the hardware unit is equal to the sum of the total resource amount requested by the at least one external device and the fourth resource amount.

Before executing this step 503, the BIOS first obtains the total resource amount and the fourth resource amount requested by the at least one external device, such as the processes shown in the following steps 5031-5034.

Step 5031: The BIOS counts the total number of the first external devices in the at least one external device to obtain the first number.

In a possible implementation, the BIOS queries at least one interface corresponding to the hardware unit from the configuration information of the hardware unit. The BIOS starts counting the total number of first external devices from 0. For any interface in the at least one queried interface, if the second resource amount corresponding to the external device connected to any interface has been obtained, explain The hardware unit is mounted with external devices connected to any interface. For any external device connected to any interface, if the second resource amount corresponding to any external device is the maximum resource amount corresponding to any external device, it means that any external device does not include a hardware subunit, and any external device does not include a hardware subunit. One external device is a first external device, and the count of the total number of first external devices is incremented by 1. If the second resource amount corresponding to any external device includes multiple third resource amounts, it means that any external device includes multiple hardware subunits, and any external device is a second external device, then the first external device The total count remains unchanged.

If the second resource amount corresponding to each external device connected to any interface is not obtained, the BIOS identifies each external device connected to any interface. Each external device is successfully identified, indicating that the identification is successful. The external device is mounted on the hardware unit. The BIOS determines whether the external device includes a hardware subunit based on the maximum resource amount stored at the first address in the external device and the first resource amount corresponding to the external device. If the external device does not Including hardware subunits, the external device is the first external device, and the count of the total number of first external devices is incremented by 1. If the external device includes multiple hardware subunits, the external device is a second external device, and the total number of first external devices remains unchanged.

In the above manner, after the BIOS queries at least one interface corresponding to the processor, the counting result of the total number of first external devices is the first number.

Step 5032: The BIOS counts the total number of hardware subunits in the second external device in the at least one external device to obtain the second number.

In a possible implementation manner, the BIOS queries at least one interface corresponding to the hardware unit from the configuration information of the hardware unit. The BIOS starts counting the total number of second external devices from 0. For any interface among the queried at least one interface, if the second resource amount corresponding to each external device connected to any interface has been obtained , for any hardware unit connected to any interface, if the second resource amount corresponding to any external device is the maximum resource amount corresponding to any external device, it means that any external device does not include a hardware sub-unit, and the If any external device is the first external device, the total number of second external devices remains unchanged. If the second resource amount corresponding to any external device includes multiple third resource amounts, it means that any external device includes multiple hardware subunits, and any external device is a second external device, then the second external device The total number count is increased by the total number of hardware subunits in any hardware unit.

If the second resource amount corresponding to each external device connected to any interface is not obtained, each external device connected to any interface is identified. Each external device is successfully identified, and the BIOS determines the external device according to the external device. The maximum amount of resources stored at the first address and the first amount of resources corresponding to the external device are determined to determine whether the external device includes a hardware subunit. If the external device does not include a hardware subunit, the external device is the first external device, The count of the total number of second external devices remains unchanged. If the external device includes multiple hardware sub-units, the external device is a second external device, and the count of the total number of second external devices is increased by the total number of hardware sub-units in the hardware unit.

According to the above method, after the BIOS queries at least one interface corresponding to the processor, the counting result of the total number of second external devices is the second number.

It should be noted that the process of BIOS identifying an external device is described in step 401 above. The BIOS determines the external device based on the maximum resource amount and the first resource amount in the configuration information stored at the first address in the external device. The process of whether the device includes hardware subunits is introduced in step 403. Here, the embodiment of the present application describes the process of the BIOS identifying each external device connected to any interface in steps 5031 and 5032 and the BIOS based on The maximum resource amount stored at the first address in the external device and the first resource amount corresponding to the external device, and the process of determining whether the external device includes a hardware subunit will not be described again.

The above description is based on the example of counting the total number of first external devices and the total number of hardware subunits. The BIOS may also perform step 5032 first and then perform step 5031. Here, the embodiment of the present application does not include this step. The execution order of 5031-5032 is not limited. In another possible implementation, the BIOS may count the total number of first external devices and the total number of second external devices at the same time, or may not at the same time. For example, every time the BIOS determines that an external device is a first external device, the total number of first external devices is incremented by 1. Every time the BIOS determines that an external device is a second external device, the total number of second external devices is incremented by 1. The total number of hardware subunits in the external device.

Step 5033: The BIOS uses the calculated sum of the first number and the second number as the total amount of resources requested by the at least one external device.

The above description is based on the example of first counting the first number and the second number respectively, and then taking the first number and the second number as the total amount of resources requested by the at least one external device. In another possible implementation manner, the total amount of resources requested by the at least one external device is directly counted. For example, the BIOS starts counting from 0 and queries the at least one external device in the manner in step 5031 or 5032 above. During the query process, each time the BIOS determines that an external device is the first external device, the count is incremented by 1. Each time the BIOS determines that an external device is the second external device, the count is incremented by the total number of hardware subunits in the external device. . After querying the at least one external device, the final counting result is the total amount of resources requested by the at least one external device.

Step 5034: The BIOS determines the fourth resource amount according to the number of the target slots in the at least one slot.

In a possible implementation manner, the BIOS counts the number of the target slots in the at least one slot and obtains a third number. Considering that when a single target slot is hot-plugged, the maximum resource amount of the bus requested by a single target slot is the fifth resource amount, then the BIOS uses the product of the fifth resource amount and the third number as the fourth resource amount. Among them, the value of the fifth resource amount may be different according to the slots in different application scenarios. Here, the embodiment of the present application does not limit the value range of the fifth resource amount.

The third number is the number of the target slot in at least one slot. The process of BIOS counting the number of target slots in the at least one slot is introduced below:

In a possible implementation, the BIOS starts counting the number of target slots from 0. For any of the at least one slot, when the control register of the hardware unit stores the configuration of the connector information, the BIOS obtains the configuration information of the slot from the configuration information of the connector in the control register.

When the control register of the hardware unit does not store the configuration information of the connector, if the slot is a card slot on the connector, the BIOS accesses the connector and reads the slot from the connector's configuration information. configuration information. If any slot is a card slot on a circuit board, then any slot is an interface on the circuit, and the BIOS obtains the configuration information of the slot from the configuration information of the circuit board.

After obtaining the configuration information of the slot, if the configuration information of the slot includes the target identifier, it means that the slot has the hot-swappable function and the slot is the target slot, and the count of the number of target slots is incremented. 1. If the configuration information of the slot does not include the target identifier, it means that the slot does not have the hot-swappable function and the slot is not a target slot, so the count of the number of target slots remains unchanged.

According to the above method, after the BIOS queries the at least one slot, the counting result of the number of target slots is the third number.

After determining the total resource amount requested by the at least one external device and the fourth resource amount, the BIOS uses the sum of the total resource amount requested by the at least one external device and the fourth resource amount as the second resource amount of the hardware unit.

It should be noted that the above is an example of first determining the total resource amount requested by the at least one external device and then determining the fourth resource amount. In another implementation manner, the BIOS can also first determine the fourth resource amount. The amount of resources, and then determine the total amount of resources requested by the at least one external device, or determine the fourth amount of resources and the total amount of resources requested by the at least one external device at the same time.

The above description is based on the example of the hot-swapping function of the interface occupying the bus. If other functions of the interface may also occupy the bus, the number of buses that may be occupied by other functions is added to the amount of resources requested by the interface. Similarly, If the external device has other functions that may also occupy the bus, the number of buses that other functions may occupy is added to the amount of resources requested by the external device.

504. If the resource is an MMIO address, the BIOS uses the sum of the resource amounts requested by at least one external device mounted on the hardware unit as the second resource amount corresponding to the hardware unit.

In a possible implementation, this step 5041 includes the following steps 5041 and 5042.

Step 5041: For each external device in the at least one external device, the BIOS obtains the resource amount requested by each external device.

Since the sub-hardware devices of the external device may also request the MMIO address in subsequent work processes, for each external device in the at least one external device, if the external device does not include a hardware subunit, the BIOS will The maximum resource amount is used as the resource amount requested by the device. If the external device includes multiple hardware sub-units, the BIOS takes the sum of the maximum resource amounts corresponding to the multiple hardware sub-units as the resource amount requested by the device.

In a possible implementation manner, the BIOS queries at least one interface corresponding to the hardware unit from the configuration information of the hardware unit. For any one of the queried at least one interface, if the second resource amount corresponding to each external device connected to any interface is not currently obtained, then perform the following operations on each external device connected to any interface: Identification, each successful identification of an external device means that the external device mounts the hardware unit and obtains the second amount of resources corresponding to the external device. Alternatively, after identifying at least one external device connected to the at least one interface, the BIOS obtains the second resource amount corresponding to each external device in the at least one external device.

If the second resource amount corresponding to at least one external device connected to any interface has been obtained, it means that the identification of the at least one external device has been completed, and then each external device in the at least one external device that has been obtained before is obtained. The corresponding second resource amount.

Because when the external device does not include a hardware subunit, the second resource amount corresponding to the external device is equal to the maximum resource amount corresponding to the external device, and when the external device includes multiple hardware subunits, the corresponding second resource amount of the external device includes multiple third resource amounts, and each third resource amount is the maximum resource amount corresponding to a hardware subunit. Therefore, for each external device in the at least one external device, when the second resource corresponding to the external device is obtained After measuring, if the external device does not include a hardware subunit, the second resource amount corresponding to the external device is used as the resource amount requested by the external device. If the external device includes multiple hardware subunits, the second resource amount corresponding to the external device is used as the resource amount requested by the external device. The sum of a plurality of third resource amounts included in the second resource amount is used as the resource amount requested by the external device.

Step 5042: The BIOS uses the sum of the resource amounts requested by the at least one external device as the second resource amount corresponding to the hardware unit.

It should be noted that steps 503 and 504 are the process of obtaining the second resource amount corresponding to the hardware unit in the case of different resources, and steps 503 and 504 are parallel steps.

505. The BIOS allocates the resource to the hardware unit according to the first resource amount and the second resource amount.

In a possible implementation, if the first amount of resources is less than the second amount of resources, and there is a target processor in the plurality of processors, the redundant resources of the target processor are allocated to the hardware unit, so that the The hardware unit can be allocated the second amount of resources. Wherein, the resource amount pre-allocated by the circuit board to the target processor is greater than the resource amount requested by the target processor. It can be understood that the target processor is a corresponding first resource amount among multiple processors that is greater than the corresponding resource amount. A processor with a second amount of resources.

If the first resource amount is less than the second resource amount, the difference between the second resource amount and the first resource amount is called the sixth resource amount. Wherein, there is at least one target processor among the plurality of processors. If there is a target processor with an excess resource amount greater than or equal to the sixth resource amount in the at least one target processor, the BIOS reclaims the excess resources of the target processor. A sixth amount of resources among the amount of excess resources of the target processor is allocated to the hardware unit and a second amount of resources pre-allocated to the hardware unit, so that the hardware unit can The resources allocated to the second resource amount, wherein the excess resource amount of the target processor is the difference between the corresponding second resource amount and the corresponding first resource amount of the target processor. For example, the first resource amount corresponding to the hardware unit is 64, the second resource amount is 72, then the sixth resource amount is 8. If the excess resource amount of target processor 1 in the at least one target processor is greater than or equal to 8, then Allocate 8 resources of target processor 1 to this hardware unit.

If there are multiple target processors in the plurality of processors, and there is no target processor in the plurality of target processors whose excess resource amount is greater than or equal to the sixth resource amount, the BIOS will select at least one of the target processors from the plurality of target processors. A sixth amount of resources is reclaimed from excess resources of a target processor, and the reclaimed sixth amount of resources is allocated to the hardware unit. For example, the first resource amount corresponding to the hardware unit is 64, the second resource amount is 72, then the sixth resource amount is 8. If the excess resource amount of the target processor 2 among the multiple target processors is 5, if the multiple target processors have The amount of excess resources of target processor 3 among the target processors is 3, then 5 resources of

target processor

2 and 3 resources of target processor 3 are allocated to the hardware unit. Or, if the excess resources of the target processors 4-7 among the multiple target processors are all 3, allocate 2 resources of each of the target processors 4-7 to the hardware unit.

After querying the excess resources of each target processor on the circuit board, if the hardware unit cannot allocate the second amount of resources, the BIOS determines the maximum amount of resources that the hardware unit can allocate, where, the hardware unit The maximum amount of resources that can be allocated is less than the second amount of resources, turn off at least one third external device mounted on the hardware unit, and use the seventh amount of resources among the excess resources of the target processor in the plurality of processors. assigned to this hardware unit. Wherein, the sum of the resource amounts requested by the at least one third external device is greater than or equal to a seventh resource amount, and the seventh resource amount is the sum of the second resource amount corresponding to the hardware unit and the maximum resource amount that the hardware unit can allocate. Difference.

Wherein, the BIOS closing at least one third external device mounted on the hardware unit includes the BIOS closing the link between the processor and each third external device.

In the method provided by the embodiment of the present application, the BIOS of the circuit board automatically allocates resources to the hardware unit based on the amount of resources pre-allocated by the circuit board for the hardware unit and the amount of resources requested by the hardware unit. Therefore, there is no need to upgrade the BIOS, and the BIOS can Allocate resources, thereby saving BIOS maintenance costs. The first amount of resources is less than the second amount of resources, and there is a target processor in the plurality of processors. Allocate excess resources of the target processor to the hardware unit so that the hardware unit can allocate the second amount of resources. resources to meet the working requirements of the hardware unit so that the subsequent hardware unit can work normally.

Figure 6 is a flow chart of another resource allocation method when the hardware unit is an external device provided by an embodiment of the present application. The circuit board is connected to the hardware unit. The circuit board includes a resource manager, and the resource manager is connected to the BIOS. The hardware unit is used to provide hardware resources. The method is applied to the BIOS of the circuit board. The method includes the following steps 601-603.

601. If the hardware unit is an external device, the BIOS obtains the first resource amount corresponding to the hardware unit through the resource manager, where the first resource amount is the resource amount pre-allocated by the circuit board for the hardware unit.

In a possible implementation, the hardware unit is connected to the circuit board through a slot, and the BIOS reads the maximum amount of resources corresponding to the slot where the hardware unit is located through the resource manager, and reads the corresponding The maximum resource amount is used as the first resource amount corresponding to the hardware unit.

The following is an introduction to the process of the BIOS reading the maximum amount of resources corresponding to the slot where the hardware unit is located through the resource manager:

In a possible implementation, if the circuit board is connected to a connector, and the slot is a card slot on the connector, and the hardware unit is connected to the slot, the BIOS can access the card from the connector through the resource manager. The maximum resource amount corresponding to the slot is read, and the BIOS uses the maximum resource amount corresponding to the slot as the first resource amount corresponding to the hardware unit. If the slot is a card slot on the circuit board, the hardware unit is connected to the slot, and the resource manager is connected to the BIOS and the slot respectively. The BIOS obtains the maximum amount of resources corresponding to the slot through the resource manager. , using the maximum amount of resources corresponding to the slot as the first amount of resources corresponding to the hardware unit.

Among them, the BIOS reads the maximum amount of resources corresponding to the slot from the connector through the resource manager, including: the BIOS reads the maximum amount of resources corresponding to the slot where the hardware unit is located from the resource manager by issuing instructions to the resource manager. quantity.

In a possible implementation manner, the BIOS sends an instruction to the resource manager to read the maximum amount of resources corresponding to the slot where the hardware unit is located from the resource manager, including any of the following methods C or D. .

Method C: The BIOS sends a first acquisition request to the resource manager. The resource manager receives the first acquisition request, reads the maximum resource amount corresponding to the slot where the hardware unit is located according to the first acquisition request, and sends it to the BIOS. The maximum amount of resources corresponding to the slot where the hardware unit is located. Correspondingly, the BIOS receives the maximum amount of resources corresponding to the slot where the hardware unit is located from the resource manager.

The first acquisition request is used to indicate acquiring the maximum amount of resources corresponding to the slot where the hardware unit is located. If the BIOS has not recognized the hardware unit, the first acquisition request includes the identification of the interface to which the hardware unit is connected on the circuit board. If the BIOS has identified the hardware unit, the first acquisition request includes the identification of the hardware unit. and the identification of the interface on the circuit board to which the hardware unit is connected.

After the resource manager obtains the first acquisition request, it parses the first acquisition request. If the identifier of the interface is parsed from the first acquisition request and the identifier of the hardware unit is not parsed, the resource manager parses the The identifier of the interface identifies each external device connected to the interface. If it is recognized that the interface is connected to at least one external device, the resource manager reads the maximum resource amount corresponding to the slot where the at least one external device is located, and reads The obtained maximum amount of resources corresponding to the slot where the at least one external device is located is sent to the BIOS. Correspondingly, the BIOS receives the maximum amount of resources corresponding to the slot where the at least one external device is located from the resource manager, and the BIOS sends the maximum amount of resources corresponding to the slot where the at least one external device is located. Any external device is used as the hardware unit, and the maximum resource amount corresponding to the slot where the hardware unit is located is used as the first resource amount corresponding to the hardware unit.

If the identifier of the interface and the identifier of the hardware unit are parsed out from the first acquisition request, the resource manager reads the maximum amount of resources corresponding to the slot where the hardware unit is located based on the identifier of the interface and the identifier of the hardware unit, and transfers the The maximum amount of resources corresponding to the slot is sent to the BIOS. Correspondingly, the BIOS receives the maximum resource amount corresponding to the slot where the hardware unit is located from the resource manager, and uses the maximum resource amount corresponding to the slot where the hardware unit is located as the first resource amount corresponding to the hardware unit.

Among them, for each external device connected to the interface, if the external device is directly connected to the interface, the interface is also the slot where the external device is located, and the resource manager reads the interface from the configuration information of the interface. The corresponding maximum amount of resources. If the external device is connected to the interface through a connector, the resource manager reads the maximum amount of resources corresponding to the slot where the external device is located from the connector.

Method D. The resource manager stores the maximum amount of resources corresponding to the slot of at least one hardware unit. The BIOS sends a first acquisition request to the resource manager. The resource manager receives the first acquisition request. According to the first acquisition The request will send the maximum amount of resources corresponding to the slot of the at least one hardware unit to the BIOS.

When the circuit board is powered on, the resource manager identifies each external device connected to the circuit board, identifies at least one external device that is successfully identified as at least one hardware unit connected to the circuit board, and reads the slot where the at least one hardware unit is located. The maximum amount of resources corresponding to a bit stores the read maximum amount of resources corresponding to the slot where at least one hardware unit is located. Among them, the process of the BIOS reading the slot where the hardware unit is located is related to the introduction in method C. Here, the embodiment of the present application will not go into details about the process of the BIOS reading the maximum amount of resources corresponding to the slot where the at least one hardware unit is located. .

After the resource manager receives the first acquisition request, if the identifier of the hardware unit can be parsed from the first acquisition request, the resource manager obtains the identifier of the hardware unit from at least one stored hardware unit according to the identifier of the hardware unit. Obtain the maximum resource amount corresponding to the slot where the hardware unit is located among the maximum resource amounts corresponding to the slot where the hardware unit is located, and send the maximum resource amount corresponding to the slot where the hardware unit is located to the BIOS.

If the identifier of the hardware unit is not parsed from the first acquisition request and the identifier of the interface connected to the hardware unit is parsed, the resource manager retrieves the stored slot of at least one hardware unit based on the identifier of the interface. From the maximum resource amount corresponding to the bit, obtain the maximum resource amount corresponding to the slot of each hardware unit connected to the interface, and send the maximum resource amount corresponding to the slot of each hardware unit connected to the interface to the BIOS. .

For mode D, since the resource manager stores the maximum amount of resources corresponding to at least one slot of the hardware unit, when the BIOS uses method D to obtain the maximum amount of resources corresponding to the slot of the hardware unit, the resource manager receives the first After obtaining the request, there is no need to read the maximum amount of resources corresponding to the slot where the hardware unit is located, which reduces the time for reading the maximum amount of resources corresponding to the slot where the hardware unit is located, and improves the efficiency of the BIOS in obtaining the maximum amount of resources corresponding to the slot where the hardware unit is located. efficiency.

It should be noted that the process of the resource manager identifying the external device connected to the interface is the same as the process of the BIOS identifying the external device in step 401. Here, the embodiment of the present application does not require the resource manager to identify the external device connected to the interface. The process of identification will not be described again.

602. If the hardware unit is an external device, the BIOS reads the second resource amount corresponding to the hardware unit from the hardware unit, where the second resource amount is the resource amount requested by the hardware unit.

Step 602 is the same as step 403. This step 602 will not be described again in this embodiment of the present application.

603. The BIOS allocates the resource to the hardware unit according to the first resource amount and the second resource amount.

Step 603 is the same as step 404. This step 603 will not be described again in this embodiment of the present application.

In the method provided by the embodiment of the present application, the BIOS of the circuit board obtains the first resource amount corresponding to the hardware unit through the resource manager, reads the second resource amount corresponding to the hardware unit from the hardware unit, and based on the first resource amount and the second resource amount, The amount of resources automatically allocates resources to the hardware unit. Therefore, there is no need to upgrade the BIOS, and the BIOS can allocate resources to the hardware unit, thus saving BIOS maintenance costs. In addition, the resource manager provides the BIOS with the first resource and the second resource amount corresponding to the hardware unit, thereby reducing the workload of the BIOS.

The above embodiment shown in Figure 6 is explained by taking the BIOS to obtain the maximum resource amount of a slot of a hardware unit from the resource manager as an example. In another possible implementation, the BIOS can also obtain the maximum resource amount from the resource manager. The controller obtains the maximum resource amount of the slots where multiple hardware units are located. The following takes the schematic structural diagram of a circuit board provided by the embodiment of the present application shown in Figure 7 as an example, combined with the flow chart of allocating bandwidth for a riser card provided by the embodiment of the present application shown in Figure 8. In this case, Make the following introduction:

Take the circuit board in Figure 7 as an example. The motherboard shown in Figure 7 includes a CPU, PCIE bridge, target chip running BIOS, CPLD, and 6 interfaces. Among them, the CPLD of the motherboard is the resource manager in the motherboard. 6 The interfaces are interfaces 1-6 respectively. The CPLD in the motherboard obtains the configuration information of each external device connected to the circuit board, so as to actively send the first resource amount and the second resource amount corresponding to each external device to the BIOS, or to send the corresponding first resource amount and second resource amount of each external device to the BIOS according to the instructions of the BIOS. The first resource amount and the second resource amount. Take interface 4 on the motherboard as an example. Interface 4 is connected to a connector. The connector is a riser card. The riser card includes a CPLD. The CPLD of the l connector is an MCU or an electrically erasable and programmable read-only memory (electrically erasable and programmable). read only memory, EEPROM).

After the mainboard is powered on, for each interface connected to the connector, the CPLD of the mainboard obtains the configuration information of the connector connected to it from each interface. Taking interface 4 as an example, the CPLD of the motherboard communicates with the CPLD of the riser card through interface 4, and communicates from the CPLD of the riser card to obtain the configuration information of the riser card. The configuration information includes the device type of the riser card, the card number of the riser card. The number of slots, hot-swappable support, and the maximum bandwidth supported by each card slot (that is, the maximum amount of resources corresponding to each card slot). After the mainboard's CPLD obtains the configuration information of the riser card, it parses the obtained configuration information of the riser card and stores the contents of the parsed configuration information. The motherboard's CPLD also determines the link corresponding to each card slot on the riser card (that is, the link between the processor and the card slot) through the corresponding relationship between the interface identifier and the link.

When the BIOS starts, the BIOS sends a second acquisition request to the CPLD of the motherboard. The second acquisition request instructs to obtain the configuration information of each connector mounted on each CPU on the motherboard, and obtain each connector mounted on each CPU in sequence. Configuration information for the connector. Based on the second acquisition request, the CPLD of the motherboard sends the configuration information of each connector mounted on each CPU to the BIOS from the stored configuration information of each connector.

After the BIOS receives the configuration information of each connector mounted on each CPU, the BIOS can also obtain the maximum bandwidth (i.e. the first resource amount) supported by each card slot of the corresponding connector from the configuration information of each connector. ).

After receiving the configuration information of each connector mounted on each CPU, the BIOS establishes a link between the card slot of each connector and the corresponding CPU based on the configuration information of each connector mounted on each CPU. . Still taking the riser card shown in Figure 7 as an example, the BIOS configures the configuration information of the riser card to the control register of the corresponding CPU. The CPU establishes a link between the card slot of the riser card and the CPU based on the configuration information of the riser card. The link consists of a PCIE bridge between the CPU and interface 4.

After that, the BIOS reads the maximum bandwidth (i.e., the second resource amount) supported by the external device from the external device connected to each card slot through the link established for each card slot, so as to determine the maximum bandwidth supported by the external device according to the card on which each external device is located. The maximum bandwidth supported by the slot and the maximum bandwidth supported by each external device, allocating bandwidth to each external device.

In addition, after the link establishment is completed, if the card slot supports hot swap, the BIOS enables the hot swap capability and enables the hot swap interrupt.

To further explain the process of BIOS allocating bandwidth to an external device when the external device includes a pair of hardware sub-devices, refer to the flow chart of allocating bandwidth for a multi-chip PCIE device provided by an embodiment of the present application shown in Figure 9 . Each PCIE device corresponds to a PCIE bridge (that is, the link between the CPU and the PCIE device), and each chip in the multi-chip PCIE device is equivalent to a hardware subunit (that is, a logical PCIE device). If the multi-chip PCIE The device presents a physical plug-in card to the outside world. During the configuration process of the PCIE device, multiple PCIE bridges need to be configured. If only one PCIE bridge is configured, the device may be lost and the device cannot be used normally.

For example, a PCIE device with a bandwidth of X8 is inserted into an X8 card slot. The PCIE device contains 4 hardware subunits, and the maximum bandwidth of each hardware subunit is X2. Taking the circuit board as the main board and the resource manager as the CPLD as an example, when the BIOS is started, the mainboard's CPLD obtains the maximum bandwidth X8 supported by the card slot where the PCIE device is located. After the BIOS obtains the maximum bandwidth supported by the card slot from the motherboard's CPLD, it stores the configuration information of the card slot in the control register of the CPU. The CPU establishes a PCIE link between the CPU and the card slot based on the configuration information of the card slot. road. After the link establishment is completed, the BIOS queries the connection status of the PCIE link corresponding to the card slot. If the connection is successful, the BIOS enables the CPU's address translation function and allocates a temporary bus to the PCIE device (for example, the CPU bus range is 0-63, then allocate bus 1 to the PCIE device, but the PCIE device is used when the operating system is running The bus is not necessarily bus 1) and the temporary MMIO address. BIOS accesses the PCIE configuration space of the PCIE device through the temporary bus and temporary MMIO address, and obtains the supported bandwidth supported by the PCIE device. The BIOS compares the maximum bandwidth supported by the card slot where the PCIE device is located with the maximum bandwidth supported by the PCIE device. If the maximum bandwidth supported by the PCIE device is less than the maximum bandwidth supported by the card slot, the following automatic bandwidth adjustment process is triggered:

For example, if it is obtained that the maximum bandwidth supported by the PCIE device is X2 and the maximum bandwidth supported by the card slot is X8, the BIOS will split the bandwidth supported by the card slot into multiple parts, reconfigure the bandwidth for the PCIE device, and establish a link. If the corresponding link of the card slot is PCIE bridge 1, the BIOS creates logical interfaces 1-4, assigns PCIE bridges 1-4 to each logical interface in logical interfaces 1-4, and configures PCIE bridge 1-4 on the CPU side The bandwidth is all X2, and the link is re-initialized. The BIOS queries the link establishment status of PCIE bridge 2-4. If the link establishment is successful, it reallocates temporary resources, reads the configuration space of the PCIE device, and queries whether the new link (such as PCIE bridge 2-4) is connected. Hardware subunit. If yes, it means that the PCIE includes 4 hardware sub-units. The maximum bandwidth supported by the PCIE device obtained previously is the maximum bandwidth supported by X2 for the first hardware sub-unit among the 4 hardware sub-units, then continue to start; if If not, the BIOS discards the X2 bandwidth configuration, restores the original X8 bandwidth configuration, and continues booting.

Figure 10 is a flow chart of a resource allocation method of a circuit board when the hardware unit is a processor provided by another embodiment of the present application. The circuit board is connected to the hardware unit. The circuit board includes a resource manager, and the resource manager is connected to The BIOS is connected to the hardware unit. The hardware unit is used to provide hardware resources. The method is applied to the BIOS of the circuit board. The method includes the following steps 1001-1003.

1001. If the hardware unit is a processor, the BIOS obtains the first resource amount corresponding to the hardware unit through the resource manager, where the first resource amount is the resource amount pre-allocated by the circuit board for the hardware unit.

In a possible implementation manner, the BIOS implements step 1001 in any of the following manners E or F.

Method E. The average resource amount of multiple resources is stored in the resource manager. The BIOS sends a third acquisition request to the resource manager. The resource manager receives the third acquisition request and sends the request to the BIOS according to the received third acquisition request. The average resource amount of at least one resource among the multiple resources is sent. After receiving the average resource amount of the at least one resource, the BIOS uses the average resource amount of the at least one resource as a first resource amount corresponding to the hardware unit.

Wherein, the multiple resources include bus and MMIO addresses, and the third acquisition request is used to indicate acquiring an average resource amount of at least one resource among the multiple resources.

In a possible implementation, the third acquisition request includes an identification of at least one resource. After the resource manager receives the third acquisition request, it parses the identifier of the at least one resource from the third acquisition request. The resource manager obtains the average value of the stored multiple resources based on the identifier of the at least one resource. In the resource amount, the average resource amount of the at least one resource is obtained, and the obtained average resource amount of the at least one resource is sent to the BIOS. If the BIOS receives the average resource amount of the at least one resource from the resource manager, the BIOS uses the average resource amount of the at least one resource as a first resource amount corresponding to the hardware unit.

Alternatively, after receiving the third acquisition request, the resource manager sends the total resource amount of the at least one resource and the number of processors on the circuit board to the BIOS. When the BIOS receives the total resource amount of the at least one resource, amount and the number of processors on the circuit board. For each resource in the at least one resource, the BIOS divides the total resource amount of the resource by the number of the processor to obtain the first resource corresponding to the hardware unit. quantity.

Method F: The resource manager stores the first resource amount corresponding to at least one processor. The BIOS sends a fourth acquisition request to the resource manager. The resource manager receives the fourth acquisition request. According to the received fourth acquisition request , sending the corresponding first resource amount of the hardware unit in the at least one processor to the BIOS. Correspondingly, the BIOS receives the corresponding first resource amount of the hardware unit.

There is at least one first resource amount corresponding to each hardware unit in at least one processor, and each first resource amount of each hardware unit object is a resource amount of a bus or a resource amount of an MMIO address. The fourth acquisition request is used to indicate acquiring the first resource amount corresponding to the hardware unit.

In a possible implementation, the fourth acquisition request includes an identification of the hardware unit. After the resource manager receives the fourth acquisition request, it parses the identification of the hardware unit from the fourth acquisition request. The resource manager obtains the first resource corresponding to at least one processor from the storage according to the identification of the hardware unit. In the amount, obtain the first resource amount corresponding to the hardware unit, and send the obtained first resource amount corresponding to the hardware unit to the BIOS. Correspondingly, the BIOS can receive the corresponding first resource amount of the hardware unit.

1002. If the hardware unit is a processor, the BIOS obtains the second resource amount corresponding to the hardware unit, where the second resource amount is the resource amount requested by the hardware unit.

If the resource to be allocated is a bus, the BIOS takes the sum of the total resource amount requested by at least one external device mounted on the hardware unit and the fourth resource amount as the second resource amount of the hardware unit. Please refer to the above-mentioned step 502 for the process in which the BIOS uses the sum of the total resource amount requested by at least one external device mounted on the hardware unit and the fourth resource amount as the second resource amount of the hardware unit.

If the resource to be allocated is an MMIO address, the BIOS uses the sum of the resource amounts requested by at least one external device mounted on the hardware unit as the second resource amount corresponding to the hardware unit. Please refer to the above step 503 for the process in which the BIOS uses the sum of the resource amounts requested by at least one external device mounted on the hardware unit as the second resource amount corresponding to the hardware unit.

1003. The BIOS allocates the resource to the hardware unit according to the first resource amount and the second resource amount.

Among them, this step 1003 is the same as step 505. Here, this embodiment of the present application will not elaborate on this step 1003.

In the method provided by the embodiment of the present application, the BIOS of the circuit board obtains the first resource amount corresponding to the hardware unit through the resource manager, and obtains the second resource amount corresponding to the hardware unit. According to the first resource amount and the second resource amount, the hardware The unit automatically allocates resources. Therefore, there is no need to upgrade the BIOS, and the BIOS can allocate resources to the hardware unit, thus saving BIOS maintenance costs. In addition, the resource manager provides the BIOS with the first resource and the second resource amount corresponding to the hardware unit, thereby reducing the workload of the BIOS.

In order to further explain the process shown in Figure 10, the hardware unit is taken as the CPU below, and refer to the flow chart of allocating a bus to the CPU provided by the embodiment of the present application shown in Figure 11. As shown in Figure 11, during the startup process, the BIOS sends a command to the CPLD (resource manager) of the mainboard (i.e., circuit board) to obtain the maximum number of CPUs supported by the mainboard. Based on the maximum number of CPUs obtained, the number of CPUs on the mainboard is Each CPU shares BUS resources equally. For example, if the motherboard of a 4P server has 4 CPUs and a total of 256 BUS numbers (i.e. 256 buses), the BIOS initially allocates 64 (256/4) BUS numbers to each CPU.

The BIOS obtains the number of slots where the external device is located, the number of logical external devices in each slot (including each hardware subunit in the first external device and the second external device), and the link of each logical external device from the CPLD of the motherboard. logo.

Among them, the process of obtaining the number of logical external devices in each slot includes: BIOS enables the address translation function of the CPU and allocates temporary bus and temporary MMIO addresses to the external devices connected to each slot. Then, the BIOS reads the configuration space of the external device connected to each slot to determine whether it is a valid external device (for example, read the manufacturer's identification and the external device's identification, if the manufacturer's identification and the external device's identification are If the values are not all FF, the external device is valid). If the external device is valid, it is determined whether the external device includes a hardware subunit. If it does not include a hardware subunit, then the number of external devices is accumulated. If a hardware subunit is included, the number of hardware subunits is accumulated. After scanning the external devices connected to the links corresponding to all slots, obtain the number of logical external devices mounted on each CPU, based on the number of buses that each logical device can subsequently occupy (for example, each logical device occupies 1- 2 BUS numbers), and then calculate the total number of BUS required by each CPU (that is, the second resource amount corresponding to each CPU).

The BIOS compares the number of BUS allocated to each CPU and the total number of BUS required by each CPU, and makes a determination for each CPU of multiple CPUs. Taking the determination process for a CPU as an example, if the number of BUS allocated to the CPU is less than required The total number of BUS will trigger BUS adjustment, otherwise, the next CPU will be judged;

Among them, when the BIOS adjusts the BUS resources, it records the CPU whose allocated BUS number is less than the total required BUS number, and the additional BUS number A required by the CPU. For example, CPU1 is allocated 64 BUS numbers by default, and CPU1 requires 72, then additional BUS numbers are required. 8 buses, that is, A is 8. Then record the number of BUS assigned by the CPU that is greater than the total number of required BUS and the number of excess BUS numbers B. For example, CPU2 is assigned 64 BUS numbers by default, and CPU2 requires 32, then there are 32 excess, and B is 32). If B is greater than A, directly take A BUS number from B and assign it to CPU1, and then reconfigure the CPU address mapping register to reassign this A BUS number to CPU1.

If B is less than A, some BUS resources are allocated from other processors with excess BUS resources. If the excess resources of each CPU with excess BUS resources have been recycled, the BUS bus required by CPU1 is still insufficient, and the part mounted under CPU1 is closed. Logical external device.

In one possible implementation, the BIOS first allocates resources to the external devices connected to the circuit board, and then allocates resources to the processor on the circuit board. Referring to the flow chart of a resource allocation method for a circuit board provided by an embodiment of the present application shown in Figure 12, as shown in Figure 12, taking the circuit board as the main board and the resource manager as the CPLD of the main board as an example, the BIOS The CPLD sends an acquisition request (such as the first to fifth acquisition requests, or the sixth acquisition request with the first to fifth acquisition request functions) to obtain the configuration information of the mainboard. After obtaining the configuration information of the mainboard, parse The content of the configuration information stores the configuration information of each processor and the configuration information of the connector connected to each interface in the configuration information to the control register of the corresponding processor, so that the processor can adjust the configuration information of each processor in the control register and the connection information of the processor to establish links between each processor and each card slot of the connector. By scanning the external devices corresponding to the card slots that successfully established the link, the devices are enumerated and the address translation function of the CPU is enabled to facilitate the subsequent use of MMIO addresses to access the external devices connected to the card slots, and at the same time allocate buses and Temporary resources such as MMIO addresses. For each external device, the BIOS accesses the configuration space of the external device and obtains the maximum bandwidth C corresponding to the external device from the configuration space. The BIOS compares the maximum bandwidth D supported by the card slot where the external device is located with the obtained maximum bandwidth C corresponding to the external device. If C is less than D, bandwidth adjustment is triggered. Specifically, if the external device includes multiple sub-hardware units, and the maximum bandwidth corresponding to each sub-hardware unit is C, set the maximum bandwidth supported by each sub-hardware unit in the external device to C in the control register of the CPU. The chain is rebuilt for each hardware subunit of the external device and temporary resources are reallocated for each hardware subunit. After querying each external device, the BIOS calculates the total resources requested by each CPU-mounted device. For example, the BIOS traverses all logical external devices mounted by each CPU, counts the total number of logical external devices mounted by each CPU and the sum of the MMIO addresses requested by the logical external devices, and uses the total number of logical external devices as the CPU request The total resource amount of the bus, the sum of the MMIO addresses requested by the logical external devices is taken as the total resource amount of the MMIO address requested by the CPU. The BIOS divides the maximum number of buses supported by the motherboard by the number of CPUs to obtain the average resource amount of the bus. The BIOS divides the MMIO address size supported by the motherboard by the number of CPUs to obtain the average resource amount of the MMIO address. The BIOS compares the total amount of resources requested by the CPU-mounted device with the average amount of resources. If the resources are insufficient, the resources are adjusted. Taking bus resources as an example, the BIOS compares the total resources of the bus requested by each CPU and the average resource amount of the bus. If any CPU has insufficient resources, that is, the average resource amount of the bus is less than the total resource amount of the bus requested by the CPU, Then trigger resource adjustment between CPUs. After the adjustment is completed, the BIOS initializes the configuration of memory, external devices, etc., and the BIOS continues to boot. For example, after the adjustment is completed, the address mapping register of the CPU where resource adjustment occurs, allocates address resources for external devices, and then the BIOS continues to boot.

The method of the embodiment of the present application is introduced above, and the device of the embodiment of the present application is introduced below. It should be understood that the device introduced below has any function of the circuit board in the above method.

Referring to Figure 13, Figure 13 is a schematic structural diagram of a resource allocation device provided by an embodiment of the present application. The device 1300 shown in Figure 13 is a circuit board. The circuit board is connected to a hardware unit 1301. The hardware unit 1301 is used for To provide hardware resources, the device 1300 includes a resource allocation unit 1302, and the resource allocation unit 1302 is used for:

Through the basic input and output system BIOS of the circuit board, resources are allocated to the hardware unit 1301 according to a first resource amount and a second resource amount, where the first resource amount is that the circuit board is the hardware unit 1301 pre-allocated resource amount, the second resource amount is the resource amount requested by the hardware unit 1301.

In a possible implementation, the circuit board is located in a computer device, the hardware unit 1301 is an external device of the computer device, the hardware unit 1301 is connected to the circuit board through a slot, and the first The amount of resources is equal to the maximum amount of resources corresponding to the slot.

In a possible implementation, the circuit board is connected to a connector, the slot is a card slot on the connector, the hardware unit 1301 is connected to the slot, and the resource allocation unit 1302 Also used for:

Through the BIOS, the maximum resource amount corresponding to the slot is read from the connector, and the read maximum resource amount is used as the first resource amount.

In a possible implementation, the device 1300 further includes a resource manager, which is connected to the BIOS and the connector respectively. The resource allocation unit 1302 is also used to:

Through the BIOS and the resource manager, the maximum amount of resources corresponding to the slot is read from the connector.

In a possible implementation, the slot is a card slot on the circuit board, the hardware unit 1301 is connected to the slot, and the device 1300 further includes a resource manager. The resource manager Connected to the BIOS and the slot respectively, the resource allocation unit 1302 is also used to:

Through the BIOS, the resource manager is used to obtain the maximum amount of resources corresponding to the slot, and the obtained maximum amount of resources is used as the first amount of resources.

In a possible implementation, the hardware unit 1301 includes multiple hardware sub-units, the second resource amount includes a plurality of third resource amounts, and each third resource amount corresponds to the multiple hardware sub-units respectively. For a hardware subunit in , each third resource amount is the maximum resource amount corresponding to the corresponding hardware subunit. The resource allocation unit 1302 is also used to:

The plurality of third resource amounts are read from the hardware unit 1301 through the BIOS.

If the first resource amount is greater than or equal to the sum of the plurality of third resource amounts, the BIOS allocates the resources corresponding to the third resource amount to each hardware subunit.

In a possible implementation, the resource allocation unit 1302 is also used to:

If the first resource amount is greater than the target resource amount stored at the first address in the hardware unit 1301, through the BIOS, according to the multiple between the first resource amount and the target resource amount, the hardware Unit 1301 creates at least two logical interfaces, the number of the at least two logical interfaces is equal to the multiple, and each logical interface is used to mount a hardware subunit of the hardware unit 1301;

Through the BIOS, perform a subunit mounting operation on the at least two logical interfaces respectively, and the subunit mounting operation is used to mount a hardware subunit for the logical interface;

If multiple logical interfaces among the at least two logical interfaces successfully mount hardware subunits, the hardware unit 1301 includes multiple hardware subunits.

In a possible implementation, the device 1300 further includes a processor, and the resource allocation unit 1302 is further configured to:

Through the BIOS, at least two first links are established, each first link corresponds to a logical interface, and each first link is used for communication between the processor and the corresponding logical interface;

Through the BIOS, a mapping relationship between the at least two logical interfaces, the at least two first links, and at least two second addresses is established, and each second address is a link of the BIOS for the corresponding logical interface. The address assigned by the loaded hardware subunit.

In a possible implementation, the hardware unit 1301 is a high-speed serial computer extension bus standard PCIE device, and the resource is bandwidth.

In a possible implementation, the device 1300 includes multiple processors, the hardware unit 1301 is any processor among the multiple processors, and the first resource amount is equal to the total amount of the resources. The amount of resources is divided by the total number of the multiple processors.

In a possible implementation, the circuit board is located in a computer device, the hardware unit 1301 is mounted with at least one external device of the computer device, and the circuit board is connected to the at least one external device through at least one slot. Device connection;

In a possible implementation, the total amount of resources requested by the at least one external device is equal to the sum of a first number and a second number, where the first number is the first external number of the at least one external device. The total number of devices, the second number is the total number of hardware subunits in the second external device in the at least one external device, the first external device is the at least one external device that does not include hardware An external device of the subunit, the second external device is an external device including a hardware subunit among the at least one external device, and the resource allocation unit 1302 is also used to:

Through the BIOS, count the total number of the first external devices in the at least one external device to obtain the first number;

Through the BIOS, count the total number of hardware subunits in the second external device in the at least one external device to obtain the second number;

Through the BIOS, the calculated sum of the first number and the second number is used as the total amount of resources requested by the at least one external device;

Determine the fourth resource amount through the BIOS according to the number of the target slots in the at least one slot;

Through the BIOS, the sum of the total resource amount requested by the at least one external device and the fourth resource amount is used as the second resource amount.

In a possible implementation, the circuit board is located in a computer device, and the hardware unit 1301 is mounted with at least one external device of the computer device. If the resource is a memory mapped input/output address, the third The second resource amount is equal to the sum of the resource amounts requested by the at least one external device.

For each external device in the at least one external device, if the external device does not include a hardware subunit, the maximum resource amount corresponding to the external device is used as the resource amount requested by the external device through the BIOS, if The external device includes multiple hardware sub-units, and the sum of the maximum resource amounts corresponding to the multiple hardware sub-units is used as the resource amount requested by the external device;

Through the BIOS, the sum of resource amounts requested by the at least one external device is used as the second resource amount.

If the first resource amount is stored in the BIOS, obtain the stored first resource amount through the BIOS;

If the circuit board further includes a resource manager, the resource manager is used to obtain the first amount of resources through the BIOS, where the resource manager is connected to the BIOS, the hardware unit 1301 and The at least one external device is connected.

If the first amount of resources is less than the second amount of resources, and there is a target processor among the plurality of processors, allocate the excess resources of the target processor to the hardware unit through the BIOS. 1301, enabling the hardware unit 1301 to allocate the resources of the second amount of resources;

In a possible implementation, the resource allocation unit 1302 is a target chip.

It should be understood that the device 1300 corresponds to the circuit board in the above method embodiment, and the modules in the device 1300 and the above other operations and/or functions are respectively implemented to implement various steps and methods implemented by the circuit board in the method embodiment. Specific details Please refer to the above method embodiments, which will not be described again for the sake of brevity.

It should be understood that when the device 1300 allocates resources to hardware units, only the division of the above functional modules is used as an example. In actual applications, the above function allocation can be completed by different functional modules as needed, that is, the internal structure of the device 1300 Divide it into different functional modules to complete all or part of the functions described above. In addition, the device 1300 provided in the above embodiments and the above method embodiments belong to the same concept. Please refer to the above method embodiments for its specific implementation process, which will not be described again here.

It should be understood that the device 1300 may be equivalent to the circuit board 100, and the target chip in the circuit board is equivalent to the resource allocation unit 1302.

The device 1300 is configured as a circuit board, and the BIOS of the circuit board automatically allocates resources to the hardware units based on the amount of resources pre-allocated by the circuit board for the hardware units and the amount of resources requested by the hardware units. Therefore, there is no need to upgrade the BIOS, and the BIOS can provide resources for the hardware units. Allocate resources, thereby saving BIOS maintenance costs.

Figure 14 is a schematic structural diagram of a circuit board provided by an embodiment of the present application. Referring to the circuit board 1400 shown in Figure 14, the circuit board 1400 includes a resource allocation unit 1401. The resource allocation unit loads at least one program code from the memory 1402 from 1401. The program code is executed by the resource allocation unit 1401 to implement the above resource allocation method. Among them, the memory 1402 and the resource allocation unit 1401 may be connected through a bus or a signal line. The memory 1402 is located inside the circuit board 1400 or outside the circuit board 1400. If the memory 1402 is located outside the circuit board 1400, the memory 1402 is an external device of the circuit board 1400.

In a possible implementation, the circuit board 1400 further includes a hardware unit 1403. There is at least one hardware unit 1403. Each hardware unit 1403 is a processor or an external device. The resource allocation unit executes at least one program code to implement Through the above resource allocation method, the resources of the circuit board 1400 are allocated to the hardware unit 1403.

In an exemplary embodiment, a computer-readable storage medium is also provided, such as a memory including program code. The program code can be executed by a resource allocation unit in the circuit board to complete the resource allocation method in the above embodiment. For example, the computer-readable storage medium is a non-transitory computer-readable storage medium, such as read-only memory (ROM), random access memory (RAM), compact disc read-only memory, CD-ROM), tapes, floppy disks and optical data storage devices, etc.

Embodiments of the present application also provide a computer program product. The computer program product includes program code. The program code is stored in a computer-readable storage medium. The resource allocation unit in the circuit board reads the program from the computer-readable storage medium. code, the resource allocation unit executes the program code, so that the resource allocation unit implements the above resource allocation method.

In the description of this application, unless otherwise stated, "/" means "or". For example, A/B can mean A or B. "And/or" in this article is just an association relationship that describes related objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone these three situations. In addition, "at least one" means one or more, and "plurality" means two or more. Words such as "first" and "second" do not limit the quantity and order of execution, and words such as "first" and "second" do not limit the number or order of execution.

In this application, the words "exemplary" or "such as" are used to mean examples, illustrations or explanations. Any embodiment or design described herein as "exemplary" or "such as" is not intended to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the words "exemplary" or "such as" is intended to present the concept in a concrete manner.

It should be noted that the information (including but not limited to user equipment information, user personal information, etc.), data (including but not limited to data used for analysis, stored data, displayed data, etc.) and signals involved in this application, All are authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data need to comply with relevant laws, regulations and standards of relevant countries and regions. For example, the first resource amount and the second resource amount involved in this application are both obtained with full authorization.

All the above optional technical solutions can be combined in any way to form optional embodiments of the present disclosure, and will not be described again one by one.

The above are only optional embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection of the present application. within the range.

Claims

A resource allocation method for a circuit board, characterized in that the circuit board is connected to a hardware unit, and the hardware unit is used to provide hardware resources. The method is applied to the basic input and output system BIOS of the circuit board, and the Methods include:

Allocate resources to the hardware unit according to the first resource amount and the second resource amount, wherein the first resource amount is the resource amount pre-allocated by the circuit board for the hardware unit, and the second resource amount is The amount of resources requested by the hardware unit.
The method according to claim 1, characterized in that the circuit board is located in a computer device, the hardware unit is an external device of the computer device, the hardware unit is connected to the circuit board through a slot, and the The first resource amount is equal to the maximum resource amount corresponding to the slot.
The method according to claim 2, characterized in that the circuit board is connected to a connector, the slot is a card slot on the connector, the hardware unit is connected to the slot, and the The first resource amount and the second resource amount, before allocating resources to the hardware unit, the method further includes:

Read the maximum resource amount corresponding to the slot from the connector, and use the read maximum resource amount as the first resource amount.
The method according to claim 3, characterized in that the circuit board further includes a resource manager, the resource manager is connected to the BIOS and the connector respectively, and the data read from the connector is The maximum amount of resources corresponding to the above slots includes:

Through the resource manager, the maximum amount of resources corresponding to the slot is read from the connector.
The method of claim 2, wherein the slot is a card slot on the circuit board, the hardware unit is connected to the slot, the circuit board further includes a resource manager, and the The resource manager is connected to the BIOS and the slot respectively. Before allocating resources to the hardware unit according to the first resource amount and the second resource amount, the method further includes:

Through the resource manager, the maximum amount of resources corresponding to the slot is obtained, and the obtained maximum amount of resources is used as the first amount of resources.
The method according to any one of claims 2-5, characterized in that the hardware unit includes a plurality of hardware sub-units, the second resource amount includes a plurality of third resource amounts, each third resource amount Corresponding to one of the plurality of hardware sub-units, each third resource amount is the maximum resource amount corresponding to the corresponding hardware sub-unit. According to the first resource amount and the second resource amount, the third resource amount is the Before the hardware unit allocates resources, the method further includes:

The plurality of third resource amounts are read from the hardware unit.
The method according to any one of claims 2-6, characterized in that the hardware unit includes a plurality of hardware sub-units, the second resource amount includes a plurality of third resource amounts, each third resource amount Corresponding to one of the plurality of hardware sub-units, each third resource amount is the maximum resource amount corresponding to the corresponding hardware sub-unit. According to the first resource amount and the second resource amount, the third resource amount is the Hardware unit allocation resources include:

If the first resource amount is greater than or equal to the sum of the plurality of third resource amounts, the resources corresponding to the third resource amount are allocated to each hardware subunit.
The method according to claim 6 or 7, characterized in that before allocating resources to the hardware unit according to the first resource amount and the second resource amount, the method further includes:

If the first resource amount is greater than the target resource amount stored at the first address in the hardware unit, create at least two logical resources for the hardware unit according to the multiple between the first resource amount and the target resource amount. Interfaces, the number of the at least two logical interfaces is equal to the multiple, and each logical interface is used to mount a hardware sub-unit of the hardware unit;

Perform a subunit mounting operation on the at least two logical interfaces respectively, and the subunit mounting operation is used to mount a hardware subunit for the logical interface;

If multiple logical interfaces among the at least two logical interfaces successfully mount the hardware subunit, the hardware unit includes multiple hardware subunits.
The method according to claim 8, wherein the circuit board further includes a processor, and performing a subunit mounting operation on the at least two logical interfaces includes:

Establish at least two first links, each first link corresponds to a logical interface, and each first link is used for communication between the processor and the corresponding logical interface;

Establish a mapping relationship between the at least two logical interfaces, the at least two first links, and at least two second addresses, where each second address is a hardware subunit mounted by the BIOS for the corresponding logical interface. assigned address.
The method according to any one of claims 2 to 9, characterized in that the hardware unit is a high-speed serial computer expansion bus standard PCIE device, and the resource is bandwidth.
The method of claim 1, wherein the circuit board includes a plurality of processors, the hardware unit is any one of the plurality of processors, and the first resource amount is equal to the The total amount of resources is divided by the total number of the multiple processors.
The method according to claim 1 or 11, characterized in that the circuit board is located in a computer device, the hardware unit is mounted with at least one external device of the computer device, and the circuit board is connected to the computer device through at least one slot. The at least one external device is connected;

If the resource is a bus, the second resource amount is equal to the sum of the total resource amount requested by the at least one external device and a fourth resource amount. The fourth resource amount is the hot plug of the target slot of the BIOS. The total amount of resources pre-allocated for the hot-plug function, and the target slot is a slot with the hot-plug function among the at least one slot.
The method according to claim 12, characterized in that the total amount of resources requested by the at least one external device is equal to the sum of a first number and a second number, the first number being the amount of the at least one external device. The total number of first external devices in the at least one external device, the second number is the total number of hardware subunits in the second external device of the at least one external device, the first external device is the at least one external device An external device that does not include a hardware subunit, the second external device is an external device that includes a hardware subunit among the at least one external device, and according to the first resource amount and the second resource amount, it is the hardware unit Before allocating resources, the method further includes:

Count the total number of the first external devices in the at least one external device to obtain the first number;

Count the total number of hardware subunits in the second external device in the at least one external device to obtain the second number;

The calculated sum of the first number and the second number is used as the total resource amount requested by the at least one external device;

Determine the fourth resource amount according to the number of the target slots in the at least one slot;

The sum of the total resource amount requested by the at least one external device and the fourth resource amount is used as the second resource amount.
The method according to claim 1 or 11, characterized in that the circuit board is located in a computer device, and the hardware unit is mounted with at least one external device of the computer device. If the resource is a memory mapped input/output address, the second resource amount is equal to the sum of the resource amounts requested by the at least one external device.
The method according to claim 14, characterized in that before allocating resources to the hardware unit according to the first resource amount and the second resource amount, the method further includes:

For each external device in the at least one external device, if the external device does not include a hardware subunit, the maximum resource amount corresponding to the external device is used as the resource amount requested by the sub-device. If the external device includes For multiple hardware sub-units, the sum of the maximum resource amounts corresponding to the multiple hardware sub-units is used as the resource amount requested by the device;

The sum of resource amounts requested by the at least one external device is used as the second resource amount.
The method according to claim 12 or 14, characterized in that before allocating resources to the hardware unit according to the first resource amount and the second resource amount, the method further includes:

If the first resource amount is stored in the BIOS, obtain the stored first resource amount;

If the circuit board further includes a resource manager, obtain the first amount of resources through the resource manager, wherein the resource manager is connected to the BIOS, the hardware unit and the at least one external device respectively. connect.
The method according to any one of claims 11-16, wherein allocating resources to the hardware unit according to the first resource amount and the second resource amount includes:

If the first amount of resources is less than the second amount of resources, and there is a target processor among the plurality of processors, allocate the excess resources of the target processor to the hardware unit, so that the hardware The unit is capable of being allocated said resources of said second amount of resources;

Wherein, the amount of resources pre-allocated by the circuit board for the target processor is greater than the amount of resources requested by the target processor.
The method according to any one of claims 4, 5 or 16, characterized in that the resource manager is a complex programmable logic device or a microcontroller.
A resource allocation device, characterized in that the device is a circuit board, the circuit board is connected to a hardware unit, the hardware unit is used to provide hardware resources, the device includes a resource allocation unit, and the resource allocation unit is used to:

Through the basic input and output system BIOS of the circuit board, resources are allocated to the hardware unit according to a first resource amount and a second resource amount, where the first resource amount is the preset amount of the circuit board for the hardware unit. The allocated resource amount, the second resource amount is the resource amount requested by the hardware unit.
The device according to claim 19, characterized in that the circuit board is located in the computer equipment, the hardware unit is an external device of the computer equipment, the hardware unit is connected to the circuit board through a slot, and the The first resource amount is equal to the maximum resource amount corresponding to the slot.
The device according to claim 20, wherein the circuit board is connected to a connector, the slot is a card slot on the connector, the hardware unit is connected to the slot, and the resource Allocation units are also used for:

Through the BIOS, the maximum resource amount corresponding to the slot is read from the connector, and the read maximum resource amount is used as the first resource amount.
The device according to claim 21, characterized in that the device further includes a resource manager, the resource manager is connected to the BIOS and the connector respectively, and the resource allocation unit is also used to:

Through the BIOS and the resource manager, the maximum amount of resources corresponding to the slot is read from the connector.
The device according to claim 20, wherein the slot is a card slot on the circuit board, the hardware unit is connected to the slot, the device further includes a resource manager, and the resource The manager is connected to the BIOS and the slot respectively, and the resource allocation unit is also used to:

Through the BIOS, the resource manager is used to obtain the maximum amount of resources corresponding to the slot, and the obtained maximum amount of resources is used as the first amount of resources.
The device according to any one of claims 20-23, characterized in that the hardware unit includes a plurality of hardware sub-units, the second resource amount includes a plurality of third resource amounts, each third resource amount Each third resource amount corresponds to one of the plurality of hardware sub-units, and each third resource amount is the maximum resource amount corresponding to the corresponding hardware sub-unit. The resource allocation unit is also used to:

The plurality of third resource amounts are read from the hardware unit through the BIOS.
The device according to any one of claims 20-24, wherein the hardware unit includes a plurality of hardware sub-units, the second resource amount includes a plurality of third resource amounts, each third resource amount Each third resource amount corresponds to one of the plurality of hardware sub-units, and each third resource amount is the maximum resource amount corresponding to the corresponding hardware sub-unit. The resource allocation unit is also used to:

If the first resource amount is greater than or equal to the sum of the plurality of third resource amounts, the BIOS allocates the resources corresponding to the third resource amount to each hardware subunit.
The device according to claim 24 or 25, characterized in that the resource allocation unit is also used to:

If the first resource amount is greater than the target resource amount stored at the first address in the hardware unit, through the BIOS, according to the multiple between the first resource amount and the target resource amount, the hardware unit Create at least two logical interfaces, the number of the at least two logical interfaces is equal to the multiple, and each logical interface is used to mount a hardware sub-unit of the hardware unit;

Through the BIOS, perform a subunit mounting operation on the at least two logical interfaces respectively, and the subunit mounting operation is used to mount a hardware subunit for the logical interface;

If multiple logical interfaces among the at least two logical interfaces successfully mount the hardware subunit, the hardware unit includes multiple hardware subunits.
The device according to claim 26, characterized in that the device further includes a processor, and the resource allocation unit is further configured to:

Through the BIOS, at least two first links are established, each first link corresponds to a logical interface, and each first link is used for communication between the processor and the corresponding logical interface;

Through the BIOS, a mapping relationship between the at least two logical interfaces, the at least two first links, and at least two second addresses is established, and each second address is a link of the BIOS for the corresponding logical interface. The address assigned by the loaded hardware subunit.
The device according to any one of claims 20 to 27, characterized in that the hardware unit is a high-speed serial computer expansion bus standard PCIE device, and the resource is bandwidth.
The device according to claim 19, wherein the device includes a plurality of processors, the hardware unit is any one of the plurality of processors, and the first resource amount is equal to the resource The total resource amount is divided by the total number of the multiple processors.
The device according to claim 19 or 29, characterized in that the circuit board is located in the computer equipment, the hardware unit is mounted with at least one external device of the computer equipment, and the circuit board is connected to the computer equipment through at least one slot. The at least one external device is connected;

If the resource is a bus, the second resource amount is equal to the sum of the total resource amount requested by the at least one external device and a fourth resource amount. The fourth resource amount is the hot plug of the target slot of the BIOS. The total amount of resources pre-allocated for the hot-plug function, and the target slot is a slot with the hot-plug function among the at least one slot.
The apparatus according to claim 30, wherein the total amount of resources requested by the at least one external device is equal to the sum of a first number and a second number, the first number being the sum of the at least one external device The total number of first external devices in the at least one external device, the second number is the total number of hardware subunits in the second external device of the at least one external device, the first external device is the at least one external device An external device that does not include a hardware subunit, the second external device is an external device that includes a hardware subunit among the at least one external device, and the resource allocation unit is also used to:

Through the BIOS, count the total number of the first external devices in the at least one external device to obtain the first number;

Through the BIOS, count the total number of hardware subunits in the second external device in the at least one external device to obtain the second number;

Through the BIOS, the calculated sum of the first number and the second number is used as the total amount of resources requested by the at least one external device;

Determine the fourth resource amount through the BIOS according to the number of the target slots in the at least one slot;

Through the BIOS, the sum of the total resource amount requested by the at least one external device and the fourth resource amount is used as the second resource amount.
The device according to claim 19 or 29, wherein the circuit board is located in a computer device, and the hardware unit is mounted with at least one external device of the computer device. If the resource is a memory mapped input/output address, the second resource amount is equal to the sum of the resource amounts requested by the at least one external device.
The device according to claim 32, characterized in that the resource allocation unit is also used to:

For each external device in the at least one external device, if the external device does not include a hardware subunit, the maximum resource amount corresponding to the external device is used as the resource amount requested by the external device through the BIOS, if The external device includes multiple hardware sub-units, and the sum of the maximum resource amounts corresponding to the multiple hardware sub-units is used as the resource amount requested by the external device;

Through the BIOS, the sum of resource amounts requested by the at least one external device is used as the second resource amount.
The device according to claim 30 or 32, characterized in that the resource allocation unit is also used to:

If the first resource amount is stored in the BIOS, obtain the stored first resource amount through the BIOS;

If the circuit board further includes a resource manager, the resource manager is used to obtain the first amount of resources through the BIOS, where the resource manager is connected to the BIOS, the hardware unit and the resource manager respectively. At least one external device is connected.
The device according to any one of claims 19-34, characterized in that the resource allocation unit is also used to:

If the first amount of resources is less than the second amount of resources, and there is a target processor among the plurality of processors, allocate the excess resources of the target processor to the hardware unit through the BIOS. , enabling the hardware unit to allocate the resources of the second amount of resources;

Wherein, the amount of resources pre-allocated by the circuit board for the target processor is greater than the amount of resources requested by the target processor.
The device according to any one of claims 22, 23 or 34, characterized in that the resource manager is a complex programmable logic device or a microcontroller.
A circuit board, characterized in that the circuit board includes a resource allocation unit, the resource allocation unit loads at least one program code from a memory, and the program code is executed by the resource allocation unit to implement claims 1 to 18 any one of the methods.
A computer-readable storage medium, characterized in that at least one program code is stored in the storage medium, and the at least one program code is read by the resource allocation unit in the circuit board, so that the resource allocation unit executes the following: The method of any one of claims 1 to 18.